CONCEPTS AND PRINCIPLES OF THE COGNITIVE APPROACH TO BEHAVIOR • • • • Step 1: Introspectionism • Intro = within, inside; spection = looking • In a typical experiment, the psychologist would expose the subject to a stimulus and ask them to describe what you see or feel. • With introspection, the focus was on conscious subjective experiences Step 2: Psychoanalysis • Sigmund Freud = the father of psychoanalysis • The cornerstone of his work is the introduction of the “unconscious” • Claimed that conscious subjective experiences are just one insignificant part of human psyche, and not the main one. • In psychoanalysis, the leading role in directing a person’s experiences and behavior is given to the unconscious drives and desires that we inherit from our ancestors. • The role of the conscious mind is to control these primitive drives when they pose a threat to one’s survival or wellbeing. • Psychoanalysis uses methods such as dream interpretations or analysis of associations Step 3: Behaviorism • Claims that the mind is not observable so “psychology is not scientific” • Should only study observable behavior (black box metaphor) Step 5: Behavioral Economics • People make mistakes in their judgments, and these mistakes are not just random deviation from the norm as cognitive psychologists would claim. • Sometimes the biases are systematic and predictable. • Irrational decisions are an important part of human behavior, and irrationality in judgment and decision-making should be accounted for in the models of cognitive functioning. Basic overall principles that define the cognitive approach in regards to behavior: • Mental processes can be studied scientifically • Mental representations guide behavior • Cognitive processes do not function in isolation • Biases in cognitive processes can be systematic and predictable MODELS OF MEMORY Memory = a cognitive process used to encode, store and retrieve information • Atkinson & Shiffrin (1968) proposed the MULTI-STORE MEMORY MODEL and said that it consists of three separate components: • Sensory memory (does not process info/ visual, auditory, olfactory – function is to detect info & hold it until it’s transferred to STM or lost – very short duration) • Short-term memory store (capacity of 5-9 chunks of info / duration no longer than 30 seconds (rehearsal is key for transfer to LTM) • Long-term memory store (stores large amounts of info for indefinite periods of time – not all info is easily retrievable – duration is potentially a lifetime) Glanzer and Cunitz (1966): research on the serial position effect • Serves as support for STM and LTM being separate memory stores. • Serial position effect = tendency to recall the first and last items on a list better than the items in the middle • Participants were required to memorize a list of words followed by a free-recall task • 1st condition: 240 army-enlisted men were presented a recording with 20 words which they were to free-recall right after. RESULTS clearly demonstrated the serial position effect as they remembered more words from the beginning of the list (primacy effect) and the end of the list (recency effect). • 2nd condition: researchers introduced a delay between the end of the list and the start of recall (participants engaged in a filler task, counting backwards for 30 seconds) RESULTS supported the primacy effect but not the recency effect. Therefore, supporting the idea that STM and LTM have separate memory mechanisms MODEL criticized for its focus on structure rather than the process & for the fact that it only explains the flow of info in one direction criticized for oversimplification of “rehearsal” enabling the transfer of info from STM to LTM LEVELS OF PROCESSING: shallow vs deep processing (shallow = physical characteristics, deep = meaning – stronger trace in LTM) • • Craik and Tulving (1975) – aimed to determine whether the level of processing has an influence on recall Asked participants questions relating to the different levels of processing before showing words to them for 200 milliseconds. then, asked participants to recall or recognize the words that they had seen RESULTS support the idea that consolidation of memory traces in LTM is not only due to rehearsal, but also of how the info was processed at the stage of encoding. WORKING MEMORY MODEL is short-term memory w/ different systems for different types of info instead of one single store • Central executive: Drives the whole system (e.g., the boss of working memory) and allocates data to the subsystems: the phonological loop and the visuospatial sketchpad. It also deals with cognitive tasks such as mental arithmetic and problemsolving. • Visuospatial Sketchpad (inner eye): Stores and processes information in a visual or spatial form. The VSS is used for navigation. • Phonological Loop: Part of working memory that deals with spoken and written material. It can be used to remember a phone number. It consists of two parts: • Phonological Store (inner ear) – Linked to speech perception. Holds information in a speech-based form (i.e., spoken words) for 1-2 seconds. • Articulatory control process (inner voice) – Linked to speech production. Used to rehearse and store verbal information from the phonological store. • • - Conrad and hull (1964) - demonstrated the phonological similarity effect Participants were required to recall list of letters (some lists were phonologically similar [rhymed] while others were not) RESULTS: rhyming lists were more difficult to remember because the traces of similarly sounding letters are easier to confuse with each other. supported the idea that memory for speech material uses a sound-based storage system, which we now know as the phonological store. Strengths of model: more sophisticated than multi-store & allows for wider range of phenomena to be explained Weakness: models w/ this degree of complexity are harder to test empirically & only involves STM & not sensory or LTM SCHEMA THEORY • • • • • • • • • - - Cognitive schemas or schemata: mental representations that organize our knowledge, beliefs and expectations. Schemas are derived from prior experience Research has shown that schemas influence memory processes at all stages – encoding, storage, and retrieval. Bransford and Johnson (1972): - Investigated the effect of context on comprehension and memory of text passages. Independent measures design Used five groups of participants All participants heard the same tape-recorded passage Then, participants were asked to recall it as accurately as possible (there were five conditions, one for every group) • 1. participants simply heard the passage • 2. participants heard the passage twice • 3. prior to hearing the passage, participants were provided with a context picture for 30 seconds • 4. the same picture was shown but after participants heard the passage • 5. a context picture was provided before the passage but the objects were rearranged RESULTS showed that on average, participants in the third condition were able to recall more than double of the idea units when compared to the other conditions ( shows that after the schema has been created (or activated), it influences the organization of our knowledge). SOCIAL SCHEMAS: mental representations abut groups of people (stereotypes) DARLEY & GROSS (1983) illustrates the effect social schema on our perceptions/interpretations (participants gave significantly higher ratings of academic performance when they thought the child was rich) SCRIPTS: sequences of events (stored in our memory & helps us make sense of sequential data (SELF-SCHEMAS: about ourselves) TWO TYPES OF INFO PROCESSING: • Bottom-up processing: Occurs when the cognitive process is data-driven; perception is not biased by prior knowledge or expectations. It is a case of “pure” info processing based on the reality as it is. • Top-down processing: Occurs when prior knowledge or expectations (schemas) act as a lens or a filter for the info that you receive and process Rat Man of Bugelski and Alampay (1961) - helped to visualize top-down processing • Participants in this study saw an ambiguous picture after being exposed to a series of drawings of either animals (condition 1) or faces (condition 2) • In the first condition, participants were more likely to see a rat. In the second condition, they were more likely to see a man wearing glasses. RELIABILITY OF COGNITIVE PROCESSES – RECONSTRUCTIVE MEMORY Reconstructive memory: Memory, rather than being the passive retrieval of info from the long-term storage, is an active process that involves the reconstruction of info. In order to see the extent to which memories can be altered by irrelevant external influences, Loftus and Palmer (1974) conducted their famous study on eyewitness testimony. Experiment 1: 45 students were split into 5 groups and are shown film recordings of traffic accidents. Following the films, participants were given a questionnaire asking them to answer a series of questions about the accident. Most of the questions were just meant to be distracters, but there was one critical question that asked about speed of the vehicles involved in the collision. This question varied among the five groups of participants: “about how fast were the cars going when they hit each other?”, and for the other groups the word “hit” was changed for “smashed”, “collided”, “bumped”, or ”contacted”. Results: mean speed estimates varied significantly (Ex. Smashed: 40.5 mph, Contacted: 31.8 Loftus and Palmer suggested that this finding could be interpreted in two possible ways: Response bias: a subject might be uncertain whether to say 30 mph or 40 mph, and a verb of higher intensity biases the response to a higher estimate. Memory change: the question causes a change in the subject’s memory representation of the accident. Experiment 2: 150 participants were shown a film depicting a multiple-car accident and were given a questionnaire that included a number of distractor questions & a critical one. This time, they were split into three groups: “smashed into each other”, “hit each other” and a control group (that was not asked the critical question). One week later, the subjects were given a questionnaire again (without watching the film). 10 questions, and the critical yes/no question was “did you see any broken glass?” There had not been any broken glass in the video. Results showed that the probability of saying “yes” to the question about broken glass was 32% when the verb “smashed” was used, and only 14% when the word “hit” was used (which was very similar to the control group). So a higher-intensity verb led both to a higher speed estimate and a higher probability of recollecting an event that had never actually occurred. Based on this result, the researchers concluded that an actual change in memory, not just response bias had occurred. How reliable is reconstructive memory in the event of recognition and in the presence of misleading information? Also, can verbal post-event information interfere with visual information obtained originally? Loftus, Miller and Burns (1978): - Results showed that misleading post-event verbal information was integrated with visual information from before, which resulted in reconstructive memory. The more time passes from the moment of the original event, the stronger effect misleading information has on our visual memory. EMOTION & COGNITION - Theories of Emotion: DARWIN (1872): —> claimed that emotions have an evolutionary meaning - EX. Sweaty palms we get when we experience a sudden fear is because sweat makes our palms softer and enhances our grip for when we climb trees.) • If emotions have an evolutionary basis, then they should be expressed similarly across cultures (EX. Darwin uses the example of blushing. Blushing is seen in people of all cultures and all ages.) THEORY OF FLASHBULB MEMORY - proposed by BROWN & KULIK (1977) • • —> FLASHBULB MEMORIES = (explanatory theory for how emotion influences cognition & memory processes) vivid memories of the circumstances in which one first learned of a surprising and emotionally arousing event => like a snapshot of a significant event (ex. JFK assassination) —> They observed that people generally had very vivid memories about the circumstances of first receiving the news about the assassination; they seemed to clearly remember where they were when they heard the news, what they were doing, who told them, what was the immediate aftermath, the weather, the smells in the air. - two variables that had to attain sufficiently high levels for flashbulb memory to occur: surprise and personal significance —> HOWEVER, this theory never assessed the accuracy of flashbulb memory HOW ARE ACCURATE ARE FLASHBULB MEMORIES? TALARICO & RUBIN (2003) AIM => tested the accuracy of the flashbulb memory PROCEDURES => On September 12, 2001 they asked 54 students to record their memory of first hearing about the 9/11 terrorist attacks and of a recent everyday event. • The same students were tested again 1, 6 or 32 weeks later • RESULTS => accuracy for the flashbulb and everyday memories did not differ; both declined over time • CONCLUSION => that flashbulb memories are only special in their perceived accuracy. • They say that the true mystery ”is not why flashbulb memories are so accurate for so long, as Brown and Kulik (1977) thought, but why people are so confident for so long in the accuracy of their flashbulb memories”. COGNITIVE PROCESSING IN THE DIGITAL WORLD ( HL only ) • Experience shapes neuronal connections and influences physiology of the brain • Our interaction with digital technologies and its affect on our cognitive processing is relevant to understand developing minds because neuroplasticity is most obvious at a young age - Research studies are contradictory which suggests the interaction between cognitive processing and digital technology is complex and multiple factors must be considered Rosen et al (2011) • suggests metacognitive strategies as a solution to compensate for negative effects of technology. • Metacognitive strategies – ability to consciously monitor and regulate your cognitive processes • Rosen aimed to examine the impact of text-message interruptions on memory recall in classroom. • Students in class received messages, all requiring a response. • RESULTS: the more text messages received, the worse the test performance • Mediated by response delay: those who responded immediately scored significantly worse than those who decided to wait This suggest you can consciously counterbalance the time you get distracted by regulating the time of response. i.e., read texts when lecture is more relaxed POINTS TO CONSIDER: • We are surrounded by digital technology, so research studies should be conducted in real life settings to approximate the reality of everyday life. Achieved by using surveys, structured naturalistic observations or the experience sampling method • These methods have inherent limitations: impossible to make cause-effect inferences, they rely on self-report, and hard to isolate effects of specific variables • Research should be supplemented by experiments. Independent variable, dependent variable and control allow researchers to make cause-effect inferences. (ex. Rosser et al 2007 study). • Controlling confounding variables inevitably makes research more artificial and reductionist —> such studies are usually specific to narrow populations, concrete skills, or concrete forms of technology • Correlation research may be used to bring in more variables and make understanding between technology and cognitive processes more holistic We can only fully understand technology effects if we combine diverse sources of evidence