PSYC316: Statistical Analysis II Section: 52 (BL) Instructor: David Grenet Ph.D Assistant Professor Department of Psychology Faculty of Arts and Science Office: PY101.02 (or by Zoom) Office hours: by appointment Contact: david.grenet@concordia.ca (put PSYC316 in the subject heading) (514) 898 2424 ext. 5435 (email is preferred) For questions about Lab assignments, contact your Teaching Assistant. Class: Initially remote on Zoom, then room CC 321 Wednesday 6pm – 8pm, on the following dates: 12/01, 26/01, 16/02, 23/02, 16/03, 30/03, 13/04 Teaching Assistants: 5255 5257 5256 Christine Gerson Christine Gerson Conall Mac Cionnaith chrissy.gerson@gmail.com chrissy.gerson@gmail.com conallmaccionnaith@gmail.com Description PSYC 316 Statistical Analysis II (3 credits). Prerequisite: PSYC 310, 315. This course is an extension of PSYC 315. It is designed to advance students' understanding of hypothesis testing and statistical inferences. The course will begin with a quick recap of what you should have learnt in PSYC 315. Note that some new concepts will be introduced (e.g., data integrity and outlier removal) as these are required to check assumptions for using most statistical analysis. The course then presents the general linear model, which subsumes linear regression, multiple regression, analysis of variance (ANOVA), and linear mixed effects models. As well, the course deals in detail with the limits of null-hypothesis significance testing (NHST) and reviews alternatives to NHST including confidence intervals, measures of effect size, meta-analysis, and Bayesian Analysis. Due to the changing standards in the field of Psychology, students will learn how to use state-of-the-art statistical analysis programs, specifically JASP (https://jasp-stats.org/) and R (https://www.r-project.org/). The advantage of these programs is that they are open source and free, and there is a growing userbase in Psychology for each. Their use is a sought-after skill by supervisors here at Concordia and beyond, and they are becoming the standard for the field of Psychology. Lecture content is delivered by remote video lectures, supplemented with live classes. Live classes will be initially on Zoom, and in person when (if) permitted by university health guidelines. Course Materials Due to the continuing pandemic, this course will initially be taught completely online, with live classes commencing later in the semester dependant on Provincial and University health guidelines. Course 1 content will be delivered by video lectures that you will be able to watch from moodle. Each video is 1015 minutes and will cover a subpart of a larger topic (normally a specific type of statistical analysis). \ The scheduled lecture time will be used for a Q&A session, where students can ask specific questions about the videos and I will emphasise important parts of the topics covered. Supporting lecture notes will be available on the course moodle page. Content belonging to instructors shared in online and blended courses, including, but not limited to, online lectures, course notes, and video recordings of classes remain the intellectual property of the faculty member. It may not be distributed, published or broadcast, in whole or in part, without the express permission of the faculty member. Students are also forbidden to use their own means of recording any elements of an online class or lecture without express permission of the instructor. Any unauthorized sharing of course content may constitute a breach of the Academic Code of Conduct and/or the Code of Rights and Responsibilities. As specified in the Policy on Intellectual Property, the University does not claim any ownership of or interest in any student IP. All university members retain copyright over their work. Tips for a successful outcome to the course: Make sure to watch every video. Statistics is about building on concepts – if you fall behind in any one concept this will make it difficult to keep up with the course. As you watch the videos, try being an active student. Take notes, try problems, write down questions, and ask them in the Q&A classes when you don’t quite get it. Your goal during class should be to think actively and make connections so that the concepts make sense to you. My goal is to help you make these connections. I teach in a format that places a strong emphasis on students demonstrating they comprehend the theoretical and practical aspects of modern statistical analysis. I won’t be asking you to calculate any of the statistics by hand or memorize formulae – that is what Google is for! But students need to demonstrate their conceptual understanding of how statistics work, and most importantly, to interpret the outcome measures of statistical tests appropriately. Laboratory classes Lab exercises will be posted to guide you through how to implement the analysis methods from the course in R and JASP. These skills will be necessary to complete the four assignments. When permitted by health guidelines, labs will resume in-person, and you will be expected to attend your scheduled laboratory classes on campus. The Teaching Assistants will be available to answer questions, initially via email or scheduled Zoom meeting, and in class when in-person classes resume. Textbook and Course Materials This course will be using open source materials for calculating statistics (JASP, R), and for teaching (open source textbook). This is done so that all students can have access to the book without having to pay for it. Note that if you have a textbook from PSYC315 (e.g., Rick Gurnsey’s book), then this is complementary to the online free books, but not required. The other advantage is that both books below are identical in their theory but show how to calculate the statistics using the two software packages we will be using. Learning Statistics in JASP: https://tomfaulkenberry.github.io/JASPbook/lsj.pdf Learning Statistics in R: https://learningstatisticswithr.com/book/ Additional materials (lecture notes, guides, R code, datasets, readings, assignments) will be posted on the class moodle site. Note that if a reading is discussed in class, you will be expected to read the article, as this will be in the exams. 2 Assignments The assignments will serve a critical purpose - to assess your application of the techniques necessary to demonstrate that you can conduct appropriate statistical analysis. The course includes four homework assignments, which aim to help you build your practical skills by transferring knowledge to real data sets. Assignments must be the work of the individual student and fall under the normal academic conduct rules (see below). Exams The midterm and final exam will be run via Moodle quizzes. These will not use the University COLE system, and under the current situation will be open book. Each student will be presented with the same format of exam question, but with randomized datasets – meaning each student will have a different set of answers from each other student. This means that even if you discuss your answer with other students (which is a violation of the academic code), it won’t help you as they will have a different answer than yours. Students will be expected to demonstrate the theory behind statistics covered in the course, as well be being able to read data from statistical output tables presented in the exam. Evaluation Summary Test Lab assignment 1-4 Midterm Final Total Value 10% per assignment (40% total) 30% 30% 100% Accessibility and Inclusion The University’s commitment to providing equal educational opportunities to all students includes students with disabilities. To demonstrate full respect for the academic capacities and potential of students with disabilities, the University seeks to remove academic, attitudinal, and physical barriers that may hinder or prevent students with disabilities from participating fully in University life. All students are welcome to meet with me during the first week of classes to discuss the barriers they face and how we can work together to reduce them. In my role as professor, I strive to make the learning experience in my class as accessible and inclusive as possible. However, if you require that an accommodation plan be established to help reduce the barriers you face as a result of a disability condition (including mental health conditions as well as chronic and temporary medical conditions) then you are requested to contact the Access Centre for Students with Disabilities in a timely fashion. Please inform me about specific accommodation needs at the start of the course. Email: acsdinfo@concordia.ca Phone: 514-848-2424 ext. 3525. For more information, contact: http://www.concordia.ca/students/accessibility.htm Participant Pool Credits One of the best ways to learn about statistics and research methods is to participate. In particular, there are special benefits for quantification students because participation will give you a chance to see how the concepts of this course are applied in actual research projects that are being carried out at Concordia University. The department has a participant pool that offers credit for participation in research being conducted in the department. You can find details about the participant pool through the 3 department’s website: https://www.concordia.ca/artsci/psychology/facilities-services/participantpool.html Each participation credit is worth 0.5% towards your final grade. In this course you will be allowed to earn up to 3 participation credits. This means that you can earn up to 1.5% bonus marks through participation. Please note that participation is completely voluntary and your final grade will not be affected if you do not participate. It is your responsibility to ensure that you correctly assign your Participant Pool credits to the correct Course and Section. Please note that the participant pool marks will only be available in Moodle after they are finalised for the semester (usually shortly after the final day of classes). Grading Scheme A+ 94 - 100 B+ 82 – 85.9 C+ 70 – 73.9 D+ 58 - 61.9 F < 50 A 90 – 93.9 B 78 – 81.9 C 66 – 69.9 D 54 - 57.9 A- 86 – 89.9 B- 74 – 77.9 C- 62 – 65.9 D- 50 – 53.9 NOTE: THIS GRADE-SCHEME IS DIFFERENT THAN SOME COURSES, AS GRADES WILL NOT BE CURVED. This scheme may seem odd to some but is actually a fair grading scheme. Each letter grade has an approximately equal value. Students cannot re-distribute the grading weight across assignments. If you are unable to complete the course as requirements as described above, you should drop the course. Plagiarism and Academic Conduct Plagiarism: The most common offense under the Academic Code of Conduct is plagiarism, which the Code defines as “the presentation of the work of another person as one’s own or without proper acknowledgement.” This includes material copied word for word from books, journals, Internet sites, professor’s course notes, etc. It refers to material that is paraphrased but closely resembles the original source. It also includes for example the work of a fellow student, an answer on a quiz, data for a lab report, a paper or assignment completed by another student. It might be a paper purchased from any source. Plagiarism does not refer to words alone –it can refer to copying images, graphs, tables and ideas. “Presentation” is not limited to written work. It includes oral presentations, computer assignments and artistic works. Finally, if you translate the work of another person into any other language and do not cite the source, this is also plagiarism. In Simple Words: Do not copy, paraphrase or translate anything from anywhere without saying where you obtained it. By remaining within the course, it will be assumed that all students will have read and understood the policies, and agree to abide by them. Any violation of the code will result in a charge being submitted to the faculty against the student, which can result in a warning, a zero grade for the assessment or course. Note that all submitted assignments and exams may be subject to a check for plagiarism should the instructor deem it necessary due to suspected plagiarism or code of conduct violation. Behaviour All individuals participating in courses are expected to be professional and constructive throughout the course, including in their communications. 4 Concordia students are subject to the Code of Rights and Responsibilities which applies both when students are physically and virtually engaged in any University activity, including classes, seminars, meetings, etc. Students engaged in University activities must respect this Code when engaging with any members of the Concordia community, including faculty, staff, and students, whether such interactions are verbal or in writing, face to face or online/virtual. Failing to comply with the Code may result in charges and sanctions, as outlined in the Code. In case of Illness or Missed Exam Please familiarize yourself with all policies pertaining to cases of illness, missed exams, incomplete work, etc. in the Undergraduate Calendar. Please note that there is a new form available for short-term absences of no more than two days. This form can be used to register a short absence without providing documentary evidence (such as a doctor’s note) under certain circumstances. However, this form cannot be used if you are going to miss an assessment of value 30% or more of the course total (such as the midterm exam). There will be no makeup for a missed midterm exam, except in emergencies (documentation from the Office of Student Affairs is required). Cases where the student missed the exam will be assessed at the instructor’s discretion on a case-by-case basis. If permitted, the makeup exams will be given in an oral exam format with the instructor. Missed exams, quizzes, or exams where the student fails to put their name on the exam script will result in a zero grade. Conflicts with the scheduled final exam must be handled through the Examinations Office. Extraordinary Circumstances In the event of extraordinary circumstances and pursuant to the Academic Regulations, the University may modify the delivery, content, structure, forum, location and/or evaluation scheme. In the event of such extraordinary circumstances, students will be informed of the changes. Important dates DNE deadline (withdrawal with tuition refund) DISC deadline (withdrawal without tuition refund) Monday, 19 January 2022 Monday, 18 April 2022 Make sure that you confirm these dates on the Concordia website: https://concordia.ca/events/academic-dates.html 5 List of topics • • Introduction to JASP and R Recap of 315 o Data visualization o Measures of central tendency and variance o Distributions o Estimating differences between means o Limitations of estimates of the mean o More robust methods of estimating and comparing means o Rationale behind dependant and independent populations o Correlations and regressions o Inferential stats using correlations and regressions o Significance testing (and problems with it) o Alternatives to significance testing o Power analysis • • • • • • • Data Screening Multiple regression Comparing multiple samples: the Analysis of Variance (ANOVA) ANCOVA Linear mixed-effects models Bootstrap & Robust Statistics Bayes Factor 6