Journal of Behavioral and Experimental Finance 37 (2023) 100722 Contents lists available at ScienceDirect Journal of Behavioral and Experimental Finance journal homepage: www.elsevier.com/locate/jbef Review article Emotions and stock market anomalies: A systematic review ∗ John W. Goodell a , , Satish Kumar b,c , Purnima Rao d , Shubhangi Verma d a College of Business, The University of Akron, USA Department of Management Studies, Malaviya National Institute of Technology Jaiur, Rajasthan, India Faculty of Business, Design and Arts, Swinburne University of Technology, Sarawak, Malaysia d Fortune Institute of International Business (FIIB), New Delhi, India b c article info Article history: Received 28 May 2022 Received in revised form 12 July 2022 Accepted 16 July 2022 Available online 22 July 2022 JEL classification: D53 G21 G40 G41 N2 a b s t r a c t While it is known that emotions affect financial markets, there has been little collective examination of the literature in terms of identifying, for instance, which emotions, under what contexts, cause particular market impacts. We systematically review articles on emotions and finance (1989–2020), with particular emphasis on papers addressing emotions influencing stock-market anomalies, either directly, or indirectly through first engendering behavioral patterns. We summarize literature linking market anomalies to specific investor emotions, as well as identify directions for further research on the emotional behavior of investors. We also identify research trends and designs, as well as data collection and analysis techniques. Given the ongoing scholarly interest in emotions and markets, results should be of great interest. © 2022 Elsevier B.V. All rights reserved. Keywords: Systematic literature review Behavioral finance Emotional finance Investor emotions Stock market anomalies Contents 1. 2. 3. 4. 5. Introduction......................................................................................................................................................................................................................... Data and methodology ...................................................................................................................................................................................................... Examining the corpus ........................................................................................................................................................................................................ 3.1. Distribution of articles .......................................................................................................................................................................................... 3.2. Journal outlets ........................................................................................................................................................................................................ 3.3. Trends in research design..................................................................................................................................................................................... 3.4. Theories used/discussed/tested ............................................................................................................................................................................ 3.5. Investor emotions and stock market anomalies ................................................................................................................................................ 3.6. Conceptual framework .......................................................................................................................................................................................... Patterns of research and future opportunities................................................................................................................................................................ Conclusions.......................................................................................................................................................................................................................... References ........................................................................................................................................................................................................................... 1. Introduction Traditional finance theory (Ross Stephen, 2005) assumes rational representative agents and perfect markets (Fama Eugene, 1970, 1995; Markowitz, 1952; Miller and Modigliani, 1961). These ∗ Corresponding author. E-mail addresses: johngoo@uakron.edu (J.W. Goodell), skumar.dms@mnit.ac.in (S. Kumar), purnima.rao@fiib.edu.in (P. Rao), shubhangi.verma-fpm@fiib.edu.in (S. Verma). https://doi.org/10.1016/j.jbef.2022.100722 2214-6350/© 2022 Elsevier B.V. All rights reserved. 1 3 4 4 5 5 6 6 9 9 9 11 economic models consider investor decision-making as resulting in deliberative equilibriums reflecting considered costs and benefits of available options. However, such idealized models fail to explain stock-market anomalies and patterns of investor behavior (Chang, 2008; De Bondt and Thaler, 1985). The assumptions of neoclassical finance have been challenged since the early 1980s as not considering a variety of behavioral predilections such as overconfidence, loss aversion, and present bias (Thaler, 1992; Thaler et al., 1997). J.W. Goodell, S. Kumar, P. Rao et al. Journal of Behavioral and Experimental Finance 37 (2023) 100722 In contrast, as is well known, behavioral finance encompasses non-pecuniary motivations and bounded rationality (Simon, 1955; Conlisk, 1996; Statman, 1999; Shiller, 2003). Such investor behavior results in market anomalies (Nigam et al., 2018). Clearly, understanding the emotional factors underlying the decisionmaking process has significant importance for investors. Behavioral finance examines the dynamics of investor behavior, recognizing that investors are irrational and prone to human errors (Statman, 1999). Many such errors have their origin in bounded rationality (Conlisk, 1996; Epstein, 1994; Gilovich et al., 2002). The focus of this review is more restrictive, being on emotional influence (e.g., Shefrin, 2002; Nofsinger, 2005). While it is long known that emotions impact markets, there has been little comprehensive assessment of the literature, for instance in terms of identifying which emotions cause what impacts. Given the wide gamut possible behavioral biases, selecting a financial model to describe markets through choosing particular individual-level behavioral aspects over others is not always straight forward (Hirshleifer, 2015). Consequently, there is utility to meaningfully aggregating differing biases into more collective forms. For instance, regarding cultural finance, Goodell (2019) suggests national cultures emerge long-term through economically optimizing selection and aggregation of individual behavioral biases. However, we also consider that social moods and collective emotions also aggregate behavior, albeit more temporally. The focus of this paper is to consider collective emotions. For instance, does happiness lead to market volatility (Li et al. 2021)? In this sense then, various diverse anomalies may have greater associations with some collective emotions over others. This systematic review assesses the literature on emotional finance, as leading to stock market anomalies. While behavioral finance considers that investors short-cut investment decisions with biases and heuristics, such as prospect theory (Tversky and Kahneman, 1974), psychoanalytic theory (Fotaki et al., 2012), valence–arousal theory (Feldman, 1995), and cognitive appraisal theory (Lerner and Keltner, 2000), and disposition effects (Grinblatt and Han, 2005), literature on emotional finance considers the role of emotions and moods such as happiness, panic, anxiety, and irritation in influencing markets. In this study, we connect these two threads by considering the literature that investigates emotions catalyzing identified investor biases and bounded rationalities. While emotions themselves cause cognitive errors, a focus on emotions in finance extends beyond causing cognitive judgmental errors (Hirshleifer, 2015) toward focusing on role of emotions such as excitement (Lepori, 2015), euphoria (Lahav et al., 2016), fear (Gurdgiev and O’Loughlin, 2020), panic (Shantha, 2019) or anger (Chun et al., 2020) and shared emotions (Olson, 2006) catalyzing or encouraging aggregate investment behavior (Andrikopoulos et al., 2021). Multiple studies have shown the effect of positive and negative emotions influencing the investor decision making as these positive or negative emotions motivates or demotivates them to take risk (Kuhnen and Knutson, 2011). In addition to provoking errors, emotions impact a variety of investor behavior such as predilection for risk-taking (Meloy, 2000). Research shows that investors respond to mood events, with subsequent direct effects on financial market returns (Lahav et al., 2016). Positive investor moods are expected to engender overconfidence leading to accepting greater risk toward seeking higher returns (Gavriilidis et al., 2020). Negative mood induces opposite effects of lower confidence and less risk taking (Johnson and Tversky, 1983). Emotional influence from interpersonal communications, social moods, is also identified to influence investors (Nofsinger, 2005). Further, as stock market outcomes are unpredictable, uncertainty motivates curiosity, with emotional responses of both a psychological and neurological nature (Bechara and Damasio, 2005; Wolozin and Wolozin, 2007). We consider that while investor psychology plays an essential role in driving thinking processes (Mushinada and Veluri, 2019; Shefrin, 2002), emotional biases also shape decision making either directly or as moderators of other factors (Jain et al., 2019). Following prior reviews (Kumar and Goyal, 2015; Zahera and Bansal, 2018; Valcanover et al., 2020; Shah et al., 2020) we employ a systematic literature review (SLR) to establish the relationship between investor emotions and subsequent stock market anomalies. Table 1 lists prior reviews either on behavioral finance, or on the financial impacts of social moods and exogenous emotions-generating events. As can been seen in Table 1, reviews have primarily been conducted in the preceding decade, rather than earlier, indicating a trending topic of interest. The reviews listed in Table 1 are generally exclusive to either a focus on behavioral biases, social moods, sentiments, or calendar effects. However, emotional aspects of investors in the investment decision making process and regarding stock market anomalies have not been highlighted. Therefore, the present study provides a comprehensive synthesis to the literature on emotional finance and its impact on equity market investments. Emotional finance encompasses a wide variety of investigative formats. For instance, experimental lab studies seek to understand investor decision-making behavior (Wuthisatian et al., 2017). A review of this literature helps future researchers understand the influence of emotions and moods at the individuallevel decision-making process (Schwarz, 2000; Greifeneder et al., 2011; Phelps et al., 2014; Lerner et al., 2015). Other studies explore the effect of mood and emotions on investor behavior (Dragouni et al., 2016; Harding and He, 2016; Wasiuzzaman and Al-Musehel, 2018). Examples of mood generators used to understand the anomalies include the theatrical release of comedy movies (Lepori, 2015); weather (Lucey and Dowling, 2005); religious celebrations (Abbes and Abdelhédi-Zouch, 2015); Islamic calendar events (Munusamy, 2018); moon phases (Floros, 2008); Pre-holiday effects (Bergsma and Jiang, 2016) and sports event (Edmans et al., 2007). Concerning the role of social interactions and moods, Gavriilidis et al. (2016), for instance, consider the influence of the Ramadan holiday on investor behavior. Such anomalies due to festival or holidays, or pre-holidays have been discussed for decades and even referred to as mysteries by researchers (Lakonishok and Smidt, 1984).[3] Various explanations for these anomalies have been suggested, including a closing effect (Pettengill, 1989), holiday euphoria (Lahav et al., 2016); investor short selling prior to holidays (Ariel, 1990); as well as pre-holiday effects (Nofsinger, 2005; Lahav et al., 2016). We identify the literature that seeks to examine emotions as catalysts of trading behavior. Following a review of the literature available on emotional finance and stock market anomalies, we present a conceptual framework classifying the role of emotions and other factors. Our conceptual framework argues that events influence emotions which in turn influence investment decisions leading to stock market anomalies. We build on past research by consider a dynamic behavioral model to address plausible emotional motivation for subsequent investment decisions. We ask several Research questions (RQ) including 1) What are the research trends in emotional finance regarding the distribution of the literature across the regions and time? (RQ1); What are the research designs, data collection methods, and data analysis techniques employed in emotional finance research? (RQ2); What are the theoretical underpinnings and factors of emotional behavior finance that lead to stock market anomalies? (RQ3); and What are the gaps in the existing literature on emotional behavioral finance and the avenues for future research? (RQ4). 2 J.W. Goodell, S. Kumar, P. Rao et al. Journal of Behavioral and Experimental Finance 37 (2023) 100722 Table 1 Review articles on emotional or behavioral finance. Article Authors Focus of review Type of review The Role of Feelings in Investor Decision-Making Lucey and Dowling (2005) Investor emotion Literature review Social mood and financial economics Nofsinger (2005) Social mood Literature review A literature review of social mood Olson (2006) Social mood Literature review A brief history and recent developments in day-of-the-week effect literature Philpot and Peterson (2011) Calendar anomalies Literature review The efficient market hypothesis and calendar anomalies: a literature review Rossi (2015) Calendar anomalies Literature review Behavioral biases in investment decision making — a systematic literature review Kumar and Goyal (2015) Investor behavior Systematic literature review Do investors exhibit behavioral biases in investment decision making? A systematic review Zahera and Bansal (2018) Investor behavior Systematic literature review Behavioral mediators of financial decision making — a meta-analysis Nigam et al. (2018) Investor behavior Meta-analysis literature review A study of prominence for disposition effect: a systematic review Zahera and Bansal (2019) Disposition effect Systematic literature review Behavioral Finance Experiments: A Recent Systematic Literature Review Valcanover et al. (2020) Investor behavior Systematic literature review The Impact of the Behavioral Factors on Investment Decision-Making: A Systemic Review on Financial Institutions Shah et al. (2020) Investor behavior Systematic literature review This table review articles in emotional finance 1989–2020. Table 2 Search protocol and database. Keywords ‘Stock market anomaly’ AND ‘emotional behavior of investor’ OR ‘investor emotions’ AND ‘Stock anomaly’ OR ‘investor behavior’ AND ‘stock market anomalies’ OR ‘emotional biases of investor’ OR ‘behavioral biases’ AND ‘January effect’ OR ‘pre-holiday effect’ OR ‘investor behavior’ OR ‘investor irrationality’ AND ‘political stock market anomalies’ OR ‘disaster and stock market’ Databases Refine ‘articles’ Refine ‘english’ Refine SCImago Areas (AND/OR): Accounting, Finance; Economics & Econometrics: Business Management & Accounting Refine ‘1989 to 2020’ Refine AJG and ABS Listed Journal Eliminate duplication Read publications by title, abstract and keywords Select articles 148 EBSCO 125 112 98 86 54 0 54 Scopus Google Scholar 172 330 165 227 138 153 94 123 68 72 23 41 45 31 Proquest 108 104 67 46 33 15 18 This table shows the textual corpus selection of the literature search through the systematic literature review process. It shares the inclusion and exclusion elements implemented while conducting the literature review search. 2. Data and methodology OR ‘behavioral biases’ AND ‘January effect’ OR ‘pre-holiday effect’ OR ‘investor behavior’ OR ‘investor irrationality’ AND ‘political stock market anomalies’ OR ‘disaster’ AND ‘stock market’. Therefore, we conclude there is a need for a review. Preparation of the review was done based upon this information and an extended protocol was developed to determine the information need to address specific objective of this study, using the criteria for inclusion and exclusion in SLRs as identified by Tranfield et al. (2003). In Stage 2, we conduct the SLR. This stage involves conducting the review in an objective and unbiased way by choosing and selecting keywords that best describe the intent of the study. The literature review is built by searching the online databases Scopus, Ebsco, Proquest, and Google Scholar to identify all relevant papers published on emotional finance. The selection criteria restrict papers to those written in English and those published from 1989–2020. The year 1989 was chosen as the initial year of our sample because the first study addressing the emotional aspects of investors in investment decision-making was published in 1989. Journals considered are restricted to those included in the Association of Business Schools Academic Journal Guide. Overall, 148 articles are identified. Stage 3 involves the dissemination of knowledge. This stage emphasizes analyzing the data. Following Callahan (2014), we focus on the four ‘W’s of what, why, where, and how as a structure for this review. Our review also follows guidelines on what, why, We employ a literature review methodology designed to present an overview and unification of relevant sources. There are several optional approaches, including meta-analytic, systematic, thematic, theoretical, historical, and bibliometric to conduct literature reviews. The SLR method is adopted to ensure the production of reliable, scientific, and replicable research (Tranfield et al., 2003). The SLR method is applied to analyze research conducted in emotional finance from 1989–2020. This research seeks to describe literature that examines the relationship between the emotional behavior of investors and stock market anomalies. SLR is conducted based on search protocol to neutralize research bias (Tranfield et al., 2003). Our search protocol proceeds through planning, conducting, and generation of knowledge via several stages. Table 2 shows the textual corpus selection of the literature searched through SLR. It shares the inclusion and exclusion elements. The SLR is conducted in six stages: planning, conducting, dissemination of knowledge, highlighting distribution, and classification of prior studies, summarization, and discussing research gaps. In Stage 1, we consider SLR planning. In this stage the need for a review is identified. In this study, it is identified that there are no publication using SLR methodology involving the keywords ‘stock market anomaly’ AND ‘emotional behavior of investor’ OR ‘investor emotions’ AND ‘stock anomaly’ OR ‘investor behavior’ AND ‘stock market anomalies’ OR ‘emotional biases of investor’ 3 J.W. Goodell, S. Kumar, P. Rao et al. Journal of Behavioral and Experimental Finance 37 (2023) 100722 Table 3 Research question and type of analysis. Research question(s) Type of analysis/ Units of analysis RQ1. What are the research trends regarding the distribution of the literature across the regions and time? Descriptive analysis and classification of literature Year of publication, Region of the Study, Journal of Publication RQ2. What are the research designs, data collection methods, and data analysis techniques employed? Descriptive analysis and classification of literature Research Methodology employed in the selected literature RQ3. What are the theoretical underpinnings and factors that lead to stock market anomalies? Thematic analysis Theories employed, emotions and sentiments of an Investor, Stock market anomalies RQ4. What are the gaps in the existing literature and the avenues for future research? Descriptive and Thematic analysis Extraction of unexplored areas through classification (as per RQ1, RQ2, and RQ3) of literature under review This table lists the research questions being addressed. and how of advancing knowledge through literature reviews as suggested by Lim et al. (2022). Where and what research has been done? To address this question, we highlight the different contexts and the methods used in prior studies on emotions playing a role in investment decisionmaking and their effect on stock market anomalies. What do we know about emotional behavior and stock market anomalies? Through the literature review, we present the general picture of how scholars approach emotional finance and stock market anomalies. We discuss the critical components of the investor emotional behavior, along with what induces positive or negative moods, and how these moods influence decision-making in finance. Why should people need to know more about emotional behavior affecting stock markets? With the growing research interest in behavioral finance, it is essential to study the anomalies that are long identified by investors but yet unexplained. Study of the influences on the investment-decision processes may well the key to understanding and explaining the ’how’ and ‘why’ of financial market anomalies (Taffler, 2017). This study adds to the ongoing debate on role of bounded rationality in shaping financial markets. Theoretical underpinning is required in considering the impacts on markets of investor buying behavior (Duxbury et al., 2020). This study proposes providing an inventory of all theories in this context. How can this review help fill the gaps in the literature and guide future research? The study suggests future research by providing insights on policy implications, and research gaps. This study will help financial advisors, portfolio managers, individual investors, market regulators, and policy makers to understand emotional behavioral biases and their impacts on anomalies. Stage 4 involves what research on emotion finance has been done. To address this question, we highlight the different contexts and the methods used in prior studies on emotions and investment decision-making. We highlight the distribution and classification of prior studies and their respective contexts. We also describe the primary sources of publications, and their research methodologies as well as the study types, and data-collection methods. Stage 5 summarizes what we know about emotional finance and stock market anomalies. We present the general picture of how scholars have approached emotional, finance and stock market anomalies. We discuss the critical components of investor emotional behavior concerning social interactions leading to positive or negative moods, and how this influences investment decision-making. Stage 6 discusses why people should need to know more about emotional behavior affecting stock markets. We highlight known investment anomalies that are left with unexplained reasoning, our unidentified emotional catalysts. Research on the association of emotions and investment decision-making may well provide a coherent basis to understand and explain financial-market anomalies. For instance, Taffler (2018) shows how the investor psychodynamic perspective may explain the nature of financial activities Gavriilidis et al. (2020) evidence a significant impact of investor mood on trading conduct. Theoretical underpinning is required to describe the emotional determinants affecting stock markets (Duxbury et al., 2020). We propose providing an inventory of all theories used regarding the role of emotions on the behavior of investors. Toward this end, we offer a critical assessment of extant theories and content analysis. In Stage 7, we consider gaps in the literature toward guiding future research. We suggest future research, as well as provide insights on policy implications. Consequently, this study will help financial advisors, portfolio managers, individual investors, market regulators, and policymakers understand the connection between emotions and market anomalies. Finally, the present review provides an important contribution toward advancing knowledge on emotional finance following the what, why, and how guide of Lim et al. (2022). Our research design adopts the approach view of Lazarus and Folkman (1984), that events, emotions, and actions are causally connected. There are scenarios where personal relevance engenders emotions among investors and subsequently manifests as a stock market effect or anomaly. Table 3 maps the research questions of this study with respective methods applied to seeking answers, while Fig. 2 illustrates our concept of how behavioral factors emerge from emotions. 3. Examining the corpus The results of examining these 148 identified scholarly works are presented in this section. Based on our systematic study of our sample articles, we find investor emotions influencing decisioncontributing to stock market anomalies. 3.1. Distribution of articles Figure 1 illustrates the distribution of articles over 1989–2020. As shown in Fig. 1, there is an increasing number of articles published after 2005 on emotional explanations to market anomalies, indicating the growing interest of researchers in understanding investor emotions to explain the stock market anomalies. Table 4 shows the frequency of the region in which these studies have been conducted. The classification shows a wide geographic author spread. We see that the highest number of studies have been conducted in North America followed by Europe and Asia. As an example, only 8% of studies have been conducted in the Indian context. 4 J.W. Goodell, S. Kumar, P. Rao et al. Journal of Behavioral and Experimental Finance 37 (2023) 100722 Fig. 1. Distribution of articles. Fig. 2. Conceptual framework. [1] Certainly, culture finance research can overlap emotional finance research. For instance, Chui et al. (2010) evidence an association of market momentum with individualism across countries. But their conceptual framework associates individualism with heightened feelings of optimism. [2] We acknowledge that emotional finance research can readily overlap investor attention research, as shocks to investor attention are typically closely related to attention events generating emotions. For example the attraction of investors toward dot.com stocks during dot.com bubble (Tuckett and Taffler, 2003); or large lottery prizes (Hu et al., 2021). Similarly, the degree to which emotions impact financial market dynamics depends on aggregate investor emotional intelligence (Bucciol et al., 2020), and also on how readily investors will act based on their emotions (Shen et al., 2017). [3] A pre-holiday effect is an anomaly that occurs due to abnormal returns a day before a holiday (Pettengill, 1989; Oğuzsoy and Güven, 2004; Lahav et al., 2016). [4] This now is identified as extending to cryptocurrency markets (Karaa et al., 2021). [5] There are interesting parallels to the theories of psychotropic voting in political science (Caplan; 2006; Caplan, 2007; Goodell and Bodey, 2012). Table 4 Regional classification of the studies. Region Frequency Percentage North America Africa Asia Pacific Europe Middle East Multiple regions 60 4 41 18 10 15 40.55% 2.70% 27.70% 12.16% 6.76% 10.13% Total 148 100% Banking and Finance has the highest number of articles written on emotional aspects of financial stock market anomalies followed by Journal of Management, Journal of Economic Behavior & Organization, and Journal of Economic Behavior & Organization for those journals having more than one article on the emotional behavioral finance in relation to stock market anomalies. Table 5 displays articles classified by ABDC and ABS rankings. Most of these articles are from journals with either an ABDC rating of A*, A, or B or are assigned an ABS ranking of 2 or above, implying that investor emotions and stock market anomalies are appreciated by the top tier journals. This table represents the frequency and percentage of the article distribution based on geographical region. 3.3. Trends in research design 3.2. Journal outlets As analysis of the literature based on type of research study and data helps to identify the focus of past research, we classify research on emotional finance into five categories: empirical With respect to journal outlets for emotional finance, results show that 148 articles are spread across 65 journals. Journal of 5 J.W. Goodell, S. Kumar, P. Rao et al. Journal of Behavioral and Experimental Finance 37 (2023) 100722 Table 5 Rankings of corpus journals. ABDC Ranking Frequency Cumulative Frequency Percentage Cumulative Percentage A* A B C 15 45 72 16 15 60 132 148 10% 30% 49% 11% 10% 41% 89% 100% ABS Ranking Frequency Cumulative Frequency Percentage Cumulative Percentage 4* 4 3 2 1 4 6 31 46 61 4 10 41 87 148 3% 4% 21% 31% 41% 3% 7% 28% 59% 100% This table shows the distribution of corpus articles by ABDC and ABS ranking. (Cadsby and Ratner, 1992; Liano et al., 1992; Brailsford and Easton, 1993); modeling and analytical methodologies (Nigam et al., 2018; Teng and Yang, 2018); conceptual (Taffler, 2018); and survey and review (Zahera and Bansal, 2019; Valcanover et al., 2020). We include in the empirical category, studies based on observations or experiments (Duxbury et al., 2020). In this conceptual research category, we include articles related to the development of models and theories. In the survey and review category, we include studies that are related to surveys, fact gatherings, as well as review papers and analytical research studies that analyze previously available models or facts. Research articles on stock market anomalies are empirical studies. Table 6 shows that research articles on emotional finance are a mix of conceptual papers, empirical studies, and review papers. The most used statistical technique used by authors is OLS regression, with other econometric techniques including the Mann–Whitney U, and Kruskal–Wallis testing, GARCH modeling, as well as Breusch– Godfrey Lagrange multiplier and White heteroscedasticity testing. Studies also involve mood proxies to understand the impact of mood and emotions on the stock market returns. Out of 148 studies 103 studies use secondary data, while only 23 studies use primary data. 2012). A vast array of literature notes the herding behavior of investors (e.g., Hirshleifer and Hong Teoh, 2003; Spyrou, 2013).[4] The disposition effect suggests investors sell assets that have increased in value while keeping assets that have dropped in value (Shefrin and Statman, 1985). Prominent theories used in emotional finance research, along with seminal references are listed in Table 7. 3.5. Investor emotions and stock market anomalies Regarding papers highlighting the influence of emotions on investor sentiment, Parker (2019), notes that spontaneous investment decisions are highly influenced by intuitions and feelings resulting in irrational behavior by investors and causes biases in decision making (Shefrin and Statman, 2009). Taffler (2018) suggests the role of unconscious mental processes in provoking feelings of excitement or anxiety generated through investing in phantastic objects (objects that inspire individuals to feel omnipotent). He illustrates the concept of emotional unconscious desire toward phantastic objects with the Berni Madoff’s Ponzi scheme where investors found the scheme very satisfying and wish fulfilling investment fantasy with no risk and high annual returns (Eshraghi and Taffler, 2012). Duxbury et al. (2020) highlights an emotion-based account that helps in explaining the disposition effect in less experienced investors and how the stock price might be influenced. They propose a theoretical representation where anticipatory emotions like the hope of earning returns and fear of losing and anticipated emotions of elation of realization of gains and disappointment of realization of losing play an integral role in investor decision making. Bucciol et al. (2020) highlight the positive effect of emotional intelligence in explaining financial risk attitude, stressing the key components were well-being, sociability, self-control, and emotionality. Literature suggests that positive (negative) moods make investors more (less) willing to choose riskier choices (Deldin and Levin, 1986). Lahav and Meer (2020) conduct an experimental study on asset markets where the traders undergo a procedure of mood induction prior to trade. Contradicting results from previous studies, they find that a positive mood reduces risk taking as traders might desire to stay positive for a longer period. Emotions play a key role in selecting the insurance policy especially casualty and life insurance which are affected by emotions aroused in response to losses, health insurance due to impulsive emotions and indemnity because of the fear of unknown (Brighetti et al., 2014). Olson (2006) posits that social mood is a summation of individual moods and investors tend to perceive reduced risk and added gains when in a positive mood. This positive mood collectively turns into a social mood that leads to a perception of reduced risk, with greater trust and greater expected gains. Nofsinger (2005) posits that the impact of social interactions may lead to an optimistic or pessimistic social mood, influencing the 3.4. Theories used/discussed/tested Regarding thematic analysis, emotional influence on investor behavior has been studied by various scholars (Taffler, 2018; Duxbury et al., 2020; Hasso et al., 2020; Gavriilidis et al., 2020; Pelster and Breitmayer, 2019; Duxbury, 2015), with these studies evidencing that investor sentiments affect markets and create anomalies (De Bondt and Thaler, 1985; Dimson, 1988; Wright and Bower, 1992; Tetlock, 2007; Rahman, 2009; Teng and Yang, 2018; Munusamy, 2018). Research provides numerous theories regarding market anomalies. For instance, prospect theory (Kahneman and Tversky, 1979a,b; Levy Jack, 1992; Barberis, 2013) suggests investors are more risk-averse with respect to gains than to losses. Portfolio theory shows the risk-averse nature of the investor and how he maximizes his returns based on the market risk available. Pericoli and Sbracia (2003) provide a theoretical framework for the study of contagion. Conlisk (1996) and others suggest limits to human rationality. The valence–arousal and cognitive-appraisal approaches are two dominating emotion theories in psychology. According to the valence–arousal model, emotions can be mapped out on a two-dimensional circular space constructed by arousal in the vertical axis (mild to intense) and valence in the horizontal axis (unpleasant to pleasant) (Feldman, 1995). Cognitive appraisal theorists contend that emotions can be distinguished at a micro level, such as an individual’s appraisal or mental response to a specific situation (Lerner and Keltner, 2000; Tiedens and Linton, 2001). Seasonal affective disorder is seen impacting investors through seasonal mood changes (Marc, 6 J.W. Goodell, S. Kumar, P. Rao et al. Journal of Behavioral and Experimental Finance 37 (2023) 100722 Table 6 Trends in research design. Type of Paper Type of Data Data Collection Method and Prominent Sources Research Techniques Example Citations Empirical (n = 123) Secondary Data (n = 103) Archival Research Financial Database (E.g. Datastream, Thomson Financials I/B/E/S database, Nikkei NEEDS Financial Quest, Bloomberg) Stock Exchanges (e.g., Taiwan Stock Exchange, Australian Stock Exchange, Stock Exchange of Singapore Ltd) Central Bank (e.g.,RBI) Descriptive analysis (ANOVA, T-tests, chi- square); Regression Analysis; GARCH regression models; Experimentation; Cluster Analysis; Panel; Kruskal–Wallis (K–W) test; Mann–Whitney U test Cadsby and Ratner (1992); Liano et al. (1992); Brailsford and Easton (1993); Agrawal and Tandon (1994); Keef and Roush (2005); Wiley and Zumpano (2009); Ashton et al. (2011); Chuliá and Torró (2011); Shen et al. (2017); Chiu (2020); Duxbury et al. (2020) Primary Data (n = 20) Questionnaire, Interviews, experiment Regression, Factor analysis, SEM Liano and White (1994); Meneu and Pardo (2004); Ding et al. (2014); Duxbury (2015); Harding and He (2016); Filiz et al. (2019); Lahav and Meer (2020); Rudiawarni et al. (2020) Modeling and Analytical (n = 7) Secondary (n = 7) Archival data Kronecker permutation; Wald test; regression, Afego (2015); Shu and Chang (2015); Shen et al. (2017); Nigam et al. (2018); Teng and Yang (2018) Conceptual and General (n = 10) NA NA Thematic analysis Taffler (2017); Hasso et al. (2020) Literature Survey and Review (n = 12) Secondary (n = 12) Systematic, Meta-analysis Zahera and Bansal (2019); Valcanover et al. (2020) This table shows the trends in the research design, displaying the statistical techniques used in past research. Research articles on emotional finance are conceptual papers, empirical studies, and review papers. Data collection methods and type of data are identified. caused by optimistic or pessimistic of CEOs (see also Huang et al., 2019). Sports events as well induce emotions of excitement or panic establishing links between game results and the stock market returns (Ashton et al., 2011). Disasters, of course, as events catalyze emotions, with ensuing anxiety causing more pessimism regarding future returns and impacting asset pricing (Kaplanski and Levy, 2010). Calendar dates and changes of seasons are also events, albeit regularly occurring at an annual frequency. Research evidences the impact of moods influenced by weather and markets (Marc, 2012). For stock pricing, investors optimistically misattribute higher (lower) stock pricing when in a good (negative) mood (Lucey and Dowling, 2005). E.M. (1993) evidences the relationship between weather and returns, with returns being significantly higher in times of increased sunshine. Brahmana et al. (2012) support this relationship b a statistically significant rely evidencing a relationship between weather and Irish equity returns. Calendar effects illustrate a market anomaly associated with particular times of the calendar. Vasileiou (2018) evidence that investor psychology influences financial trends which further influence market performance. Calendar effects include the January effect, end-of-the-month effect, end-of-the-week effect, preholiday effects, lunar effects, Ramadan effect, and religious celebrations. Calendar effects are among anomalies that take place due to unexplained and unexplored reasons. A pre-holiday effect is a calendar anomaly where the stock market shows abnormal higher returns on the day(s) before a holiday. Pettengill (1989) documents higher returns on pre-holiday days versus trading days after holidays. While January holiday effects can be attributed to tax-loss explanations, Ariel (1990) finds high mean return on trading days before holidays. These effects could be attributable to activity at the close of market and short sellers desire to close short. decision makers in a society. He depicts the social mood cycle and phases through a diagram showcasing the phases of mood in a society due to social interaction starting from increasing mood (optimism, happiness, generosity, inclusion, supportiveness and hope), reaching a peak positive mood (overconfidence, euphoria, excess, ambivalence, graciousness, trust), starting to declining mood (pessimism, sadness, conservatism, exclusion, defensiveness and suspicion) and finally reaching the peak of negative social mood (fear, depression, stinginess, segregation, antagonistic and mistrust). He concludes that the stock market reacts to the high or low in the social mood with a high or row respectively. Similarly, Prechter (1985, 1999) considers the association of stock market cycles with societal emotions. The market uptrends when society is calm, but peaks when society is energetic and enthusiastic. The market downtrends when society is sad, insecure, inhibited, and fatigued and the market is at its lowest when there is hostility, tense, and angry emotions in the society of the investors. Exogenous factors also catalyze the emotions-anomaly dynamic. For example, during ongoing terrorist attacks, it is observed that investors lower their trading activity, use less leverage, and engage in less short selling (Nigam et al., 2018). Such changes in investor behavior can be attributed to increased risk aversion and personal loss experiences. Corporate events such as acquisitions, or board change announcements activate emotions that shape cognitive bias. This is facilitated by asymmetric information. For instance, March and Shapira (1987) studies the role played by a manager in broadcasting such announcements to the investors. An optimistic manager may overestimate the performance and iterate the same to the investors which leads to overestimation of the growth and underestimation of the risk (Hackbarth, 2004). Mitchell and Mulherin (1996) study the effect of mergers on investment decision making with many mergers leading to unexpected shocks due to creation of social mood 7 J.W. Goodell, S. Kumar, P. Rao et al. Journal of Behavioral and Experimental Finance 37 (2023) 100722 Table 7 Theories used/discussed/tested. Theory Origin Example Citations Context Psychoanalysis Freud (1910) Duxbury (2015); Nigam et al. (2018); Taffler (2018) Understanding of the investor mind sets out to explore needs and desires to help drive their investment decisions Portfolio theory Markowitz (1952) Apergis et al. (2019) The theory allows investors to allocate their assets in a portfolio that minimizes risk and maximized return Bounded rational hypothesis Simon (1957) Ahmad et al. (2017) The complexity that investors face while making investment decision making Mood maintenance model Festinger (1957) Harding and He (2016) The theory explains how the mood of an investor influences his financial risk tolerance. A happy mood posits higher financial risk tolerance. Prospect theory Kahneman and Tversky (1979a,b) Wuthisatian et al. (2017); Ahmad et al. (2017) The investors perceive a higher value in perceived gains when compared to the perceived losses Valence–arousal approach Russell (1980) (Feldman, 1995); Shen et al. (2017) The theory explains the dimensional valence–arousal defining emotional intensities of trading. Cognitive appraisal approach Lazarus and Folkman (1984) Tiedens and Linton (2001); Shen et al. (2017) Its asses the emotional situation wherein investors evaluated the effect of an event happening in the stock market will affect them. Seasonal affective disorder Rosenthal et al. (1984) Lin (2015) A disorder occurring due to seasonal changes causing sad mood or low energy during winters. Disposition effect Shefrin and Statman (1985) Zahera and Bansal (2019) Hesitance of investors to realize the losses in comparison to the gains. This hesitance helps the investors in making a sound investment decisions. Fractal markets hypothesis Peters (1994) Gurdgiev and O’Loughlin (2020) Through traditional quantitative methods, the theory explains the investor behavior during stock market anomalies. Kirman herding model Kirman (1993) Ahmad et al. (2017); Shantha (2019); Vidal-Tomás and Alfarano (2020) Herd behavior is a social bias where investors tend to follow what other investors are doing. Adaptive market hypothesis Lo (2005) Gurdgiev and O’Loughlin (2020) According to the theory, efficient market hypothesis and investor behavior coexist that reconciles market efficiency at the time of disruptions. Feelings-as-information theory Schwarz (2012) Lucey and Dowling (2005). The theory states that emotions have informational value. Positive emotions share optimistic nature of the investor. Financial contagion Pericoli and Sbracia (2003) Duxbury (2015); Nigam et al. (2018) It is cascading effect of stock market anomaly spread from a small portion to a larger system. Neoclassical finance theory William Stanley Prechter and Parker (2007) Investors unconscious need to predict stock market prices to fulfill their wishful filling fantasies. This table lists the theories of employed in the corpus. window dressing are argumentative explanations provided by Agrawal and Tandon (1994) for the calendar anomalies. Other factors stated by them in their paper are tax-induced trading, institutional characteristics, and market timing. Speculative trading and arbitrage activity are plausible factors shared by Szakmary and Kiefer (2004). The January effect is known to be a seasonal increase in stock prices throughout the month of January. This increased demand for stocks is often preceded by a decrease in price during the month of December, often attributed to tax-loss harvesting. It is also suggested that many investors now time the January effect so that it becomes priced into the market, nullifying it all together. The month of Ramadan, with concomitant mental attitudes of social empathy, peacefulness, and happiness among Muslim devotees (Hassan and Kayser, 2019), is found to showcase higher returns in Muslim dominated-countries (Wasiuzzaman and Al-Musehel, 2018), with less volatility in the weekly market return. Similar studies over the past 30 years studying the holiday effect anomaly evidence strong gains were found pre-holiday trading days in comparison to post-holidays (Liano and White, 1994; Agrawal and Tandon, 1994; Johnson and Cheng, 2002; Szakmary and Kiefer, 2004; Oğuzsoy and Güven, 2004; Marrett and Worthington, 2009; Gama and Vieira, 2013; Yuan and Gupta, 2014; Bergsma and Jiang, 2016; Wasiuzzaman and Al-Musehel, 2018; Kudryavtsev, 2019; Chiu, 2020; Ziemba, 2020). Although, in contrast to these studies, (Liano, 1995) for the currency market shows insignificant pre-holiday effects. Teng and Liu (2013) empirically test the existence of pre-holiday effect in Taiwan using investor emotions as proxies, finding that positive investor emotion plays an important role in pre-holiday higher returns. Meneu and Pardo (2004) evidence that the pre-holiday effect anomaly may occur because small investors are reluctant to buy before holidays, which further increases the trade size. Such dominance by the increased average size may result in increased prices, further leading to information-based trading. Inventory adjustment and 8 J.W. Goodell, S. Kumar, P. Rao et al. Journal of Behavioral and Experimental Finance 37 (2023) 100722 4. Patterns of research and future opportunities Events can also manifest inside the body through human biorhythms or recurring cycles where decision-making is affected by physical, emotional, and psychological cycles. Trifan (2019) finds a significant impact of biorhythms, measured through seasonal affective disorder, on stock returns. We observe increasing importance given to emotional finance over our sample period. Indeed, we identify no substantial research for 1989–2000. Of additional note, for 2009–2011, the period of immediate reflection on the global financial crisis, we also identify no substantial research. This is a surprising, given that emotions can generally be considered as likely having important roles in stock market crises crashes. (Oehler et al., 2018). We find most emotional finance research has emerged from North America, Europe, and Asia, with Australia and Africa particularly lacking in output. There is a need for a broader cross section of author bases on emotional finance. Our analysis also identifies a gap regarding statistical methods used in the existing literature, where 78% is empirical research based on secondary data (70%) and primary data (8%) as the sample collection method. Further, we also find that extant studies suggest conceptual frameworks primarily through the previous literature. Few of them contributing primary theoretical ideas. As secondary data is used in most studies, regression analysis is the common statistical tool About 54% of the studies use regression, while statistical tools like experimentation, cluster analysis, panel and factor analysis have been much less used. Future studies may consider a wider tool kit to evolve novel research. As a broad number of stock market anomalies, bubbles, and crashes have occurred throughout history (Kindleberger, 1978), we encourage future researchers to consider respective anomalies on a micro-level for each market event and associated anomaly to better understand the role of emotions in catalyzing such events. 3.6. Conceptual framework We adopt a conceptual framework, illustrated in Fig. 2, which draws on Lazarus and Folkman (1984), who posit that event spur emotions that then influence behavior. Although Lazarus and Folkman (1984) mainly focus on stress-inducing events that then cause emotions, we consider a broad variety of positive and negative mood-inducing events, including events closely related to what has been identified with causing investor attention, such as large lottery prizes. Such attention-generating events in our framework could be considered engendering, for instance, jealousy for similar returns. In the Lazarus and Folkman (1984) framework, a thought occurs before an emotional arousal. A person thinks of the situation and experience before releasing any decision. Therefore, there is event that occurs which develops the thought process and further arouses emotions. Events trigger primary emotions, and then, conditioned by thoughts, secondary emotions. Primary emotions are the first emotions felt by the person as the consequence of the event. Examples are joy, fear, sadness, shame, despair; disgust (Ortony and Turner, 1990). These primary emotions, often based on conscious and unconscious judgments, trigger secondary emotions like anger, hatred, euphoria, regret, jealousy, satisfaction, love, optimism and so on. Regarding positive emotions, excitement (Taffler, 2018), optimism (Balasuriya et al., 2010), euphoria, and joy are investigated as examples of high-arousal emotions. The valence–arousal approach (Feldman, 1995) theoretically explains the effect of the psychological feelings of an individual which affects the information processing bias. There is always hope in an investor’s subconscious mind that the future price of the financial asset will go up, which excites them to invest in financial assets. These wish fulfilling ideas (Taffler, 2018) are powerful unknown building blocks of conscious reflection. Understanding this behavior of an investor may help in not only justifying the market bubbles but also understanding the normal day-to-day trading activities. Regarding negative emotions, fear, anxiety, pessimism, panic, anger, and envy, such emotions are often felt in response to unanticipated and uncontrollable events (Nofsinger, 2005). These emotions create disappointment amongst investors. (Duxbury et al., 2020) finds that disappointments and negative emotions affect the decision-making process of less experienced investors more than sophisticated investors. Social mood refers to the cumulative investor sentiments influencing the financial markets (De Long et al., 1990). Social mood has the emotional characteristics of influencing the investor sentiments from optimistic mood when financial market is growing too pessimistic mood when financial market is declining (Nofsinger, 2005). Social interaction plays an important role in influencing the investor mind. Pelster and Breitmayer (2019) finds that the relationship between the peer interactions influence of peers on the trading activities. Social interactions increase the intensity of an individual to take risk and trade more even when the trading environment is not favorable. Individuals with less experience in trading may depend particularly on their peers for information sharing and awareness (Chen et al., 2015). An avenue for future research is to consider the role of emotions in inducing herding behavior. Table 8 lists anomalies created by events through emotional catalysts. (See Table 9.) 5. Conclusions We conduct a systematic review of emotional finance, regarding this topic as a sub-area of behavioral finance that considers emotions engendering market anomalies directly or by catalyzing behaviorally motivated heuristics. By examining the literature on this topic, we assess how investors respond to emotions, thereby affecting financial market returns. We consequently gain insight into how various social moods influence stock-market prices. We conduct a systematic literature review of 148 published papers on emotional finance and stock market anomalies. We do this by offering a conceptual framework that describes the mechanisms of how emotions lead to market anomalies. In establishing our framework, we draw on Lazarus and Folkman (1984), who posit that events spur emotions that, in turn, influence behavior. Events trigger primary emotions like anger, joy, love, fear, and sadness followed by secondary emotions like guilt, enthusiasm, frustration, shame, peace, optimism, confusion, happiness, and jealousy. Although Lazarus and Folkman (1984) mainly focus on stress-inducing events that cause stresscoping emotional reactions, we consider a broad variety of positive and negative mood-inducing events, including political, corporate, and sports events, seasonality, calendar events, seasonal biorhythms, disasters; as well as events closely related to what has been identified with causing investor attention, such as large lottery prizes. Such attention-generating events in our framework could be considered ultimately engendering, for instance, jealousy for similar returns. We assess and summarize what has so far been investigated. Overall, we survey literature on events catalyzing emotions that lead to stock market anomalies. We find that, while it has long been identified that emotions impact financial markets, there has only more recently been studies that assess the specifics of particular emotions and particular financial market impacts. Further there is much room for future studies to expand in terms of geographic reach, newer and alternative contexts, more variety of econometric techniques, as well as more developed conceptual frameworks. Given the importance of this topic, this review will encourage further research on the important area of emotional finance. 9 J.W. Goodell, S. Kumar, P. Rao et al. Journal of Behavioral and Experimental Finance 37 (2023) 100722 Table 8 Anomalies and emotional catalysts. Event Emotion Anomaly Political Events Fear Abnormal Returns Example Mahmood et al. (2014); Nigam et al. (2018) Corporate Events Optimism Overestimation of growth and underestimation of risk March and Shapira (1987); Mitchell and Mulherin (1996); Hackbarth (2004) Seasonality Joy or Gloomy Positive emotions lead to overestimation of the prices and negative emotions lead to underestimation of price E.M. (1993); Lucey and Dowling (2005); Brahmana et al. (2012) Calendar effect Euphoria, Joy, Higher Returns Teng and Liu (2013); Gavriilidis et al. (2016); Qadan and Kliger (2016) Biorhythms Joy/Sadness Overestimation/ Underestimation of Returns Marc (2012); Trifan (2021) Sports events Excitement, Euphoria Higher Returns, High Volatility Ashton et al. (2008) Disasters Anxiety Risk -Aversive, Lower Returns, Underestimation of Price Kaplanski and Levy (2010) This table presents the anomalies created by the events triggered by investor emotion. Table 9 Research suggestions. Type Research questions References Conceptualization What is the scope of emotional behavior finance and how it can be defined universally? Shefrin (2002), Pompian (2006) What constitutes of emotions? Bechara and Damasio (2005) What are stock market anomalies? Wolozin and Wolozin (2007) What are different events that affect the stock market? Lucey and Dowling (2005), Floros (2008), Bergsma and Jiang (2016) What is the theoretical foundation for the linkage between finance and human investor psychology? Statman (1999), Gilovich et al. (2002) How the theoretical approach used in psychology helps in defining investor emotions? Gavriilidis et al. (2016) How can theoretical approaches used in other explain the various financial behaviors? Bouteska (2019) Theories Antecedents Moderators Consequences Measures of EBF Research methodology What are the possible primary and secondary emotions of an investor? Lahav et al. (2016), Chun et al. (2020) Examine the relationship between emotions and investor decision-making. Andrikopoulos et al. (2021) How do events induce emotions in an investor? Dragouni et al. (2016) Examine the herd behavior conducted by investors during stock market anomalies. Nofsinger (2005) Examine the emotions and stock market anomalies phenomenon before, during, and after major externalities such as COVID-19, and the Great Recession. Lim (2021); Sahoo (2021); Rao et al. (2021) Re-examine the moderating effect of geographical differences. Saurabh and Dey (2020) What is the moderating role of financial literacy in investor decision-making influenced by investor behavior? Hamurcu and Hamurcu (2020) How do personality traits affect investor decision-making? Kumari et al. (2019) Whether there is an existence of a relationship between events and investor emotions? Lucey and Dowling (2005); Qadan and Kliger (2016) Whether emotional behavior of the investor affects the investment decision-making of the investor? Kaplanski and Levy (2010) Examine the relationship between the events, emotions, investor decision-making, and stock market anomalies Brahmana et al. (2012) Whether these emotions lead to stock market anomalies? Mahmood et al. (2014) How can the constructs be measured/which emotional behaviors? Taffler (2018), Duxbury et al. (2020) Develop scales to measure the investor’s emotional response while making investment decisions. Kishor (2020) Extend the research by including more conceptual papers Duxbury et al. (2020) Add studies that are focused on primary sources of data collection. Filiz et al. (2019), Lahav and Meer (2020) Using not previously used methods of analysis such as SEM and event study Kishor (2020); Kujawa and Ostrowska (2016) Objective measures using neuroscience could be considered in analyzing the emotional response of the subjects Lim (2018a,b) Nomological networks could also be established with a more powerful review technique such as bibliometric analysis Donthu et al. (2021); Mukherjee et al. (2022) This table lists proposals for future research. 10 J.W. Goodell, S. Kumar, P. Rao et al. 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