Please check this website periodically for announcements regarding PSYCH 710.
The course outline for PSYCH 710 can be obtained here.
"Without replication, all results should be taken as preliminary." -- Gary Marcus, Cleaning Up Science, The New Yorker News Desk, December 24, 2012
- Lectures will be held onn Monday afternoon, 1:30-3:30 PM, PC-335. The first lecture is on September 11th.
- You will be assigned to one of two statistics labs that will be held on Thursdays, 10:30AM-12:30PM or 12:30PM-2:30PM, in PC-154. The first labs will be on September 14th.
- The textbook for this course, Designing Experiments and Analyzing Data: A model comparison perspective (2nd ed., Maxwell & Delaney), can be obtained in the McMaster bookstore.
- The statistical softwared used in this course is R, which can be downloaded here.
- Office Hour:
- TAs will hold office hours on Tuesdays, 1-2PM, in PC-428E
- You can arrange to meet with me by sending me an email.
- UPDATES:
- [11-Dec 11:00 AM] Here are the answers to the last set of practice questions.
- [08-Dec 12:05 PM] I uploaded some practice questions covering within-subjects ANOVA. We will go over these questions in class on Monday.
- [29-Nov 3:15 PM] Here is an interesting article that discusses ways that we could improve statistical analyses.
- [29-Nov 10:50 AM] I uploaded the slides for the 1-way within-subjects ANOVA lecture.
- [24-Nov 1:35 PM] Here are some slides that review common misinterpretations of AxB interactions.
- [21-Nov 9:25 PM] I uploaded the slides for the ANCOVA lecture.
- [13-Nov 11:20 AM] The answers for the practice questions are here.
- [10-Nov 10:30 PM] Practice questions for test 2 can be found here. Just do questions 1-3; ignore question 4 because it addresses ANCOVA which we have not yet covered in class.
- [07-Nov 11:15 AM] All of the slides from the lectures on Factorial ANOVA are here.
- [31-Oct 5:05 PM] Copies of the slides from yesterday's lecture are here.
- [26-Oct 9:30 PM] The answer key for the lab on multiple comparisons is here.
- [23-Oct 12:58 PM] The uploaded the slides for the lecture on multiple comparisons.
- [16-Oct 10:55 AM] The answers to the practice questions (set 1) are here.
- [12-Oct 10:50 AM] Here is the link to the answer key for the trend analysis handout.
- [11-Oct 4:22 PM] If you will be out of town and unable to take the first mid-term on October 19th, please contact me ASAP to arrange for another time to complete the test.
- [11-Oct 4:20 PM] Test 1 is scheduled for Thursday, October 19th (during your lab time). We will have an in-class review session next week. Try the answering the practice questions before the review.
- [11-Oct 2:10 PM] Practice questions for the first test can be found here.
- [05-Oct 7:35 PM] The answer key for lab 4 (linear comparisons) is here.
- [05-Oct 8:00 AM] Links to the linear contrast lecture slides and the lab have been added.
- [01-Oct 10:40 AM] I uploaded the answer key for lab 3 (One-way ANOVA).
- [26-Sep 10:50 AM] I uploaded the handout for lab 3 (One-way ANOVA).
- [25-Sep 1:15 PM] I uploaded the slides for the lecture on one-way ANOVA.
- [24-Sep 9:50 PM] I made some minor changes to Section 3.4.1 in the notes on Chapter 3 (one-way ANOVA).
- [22-Sep 12:19 AM] The answers for the 2nd lab are posted.
- [19-Sep 2:26 PM] The slides that I presented in class on Sept 19 can be obtained here.
- [15-Sep 9:15 AM] The answers for the first lab have been posted.
- [11-Sep 9:03 PM] The slides that I presented in class on Sept 11 can be obtained here.
- [11-Sep 5:30 PM] I uploaded a slightly modified version of my notes notes on testing differences between means.
- [11-Sep 5:20 PM] I uploaded a copy of the handout for lab 1.
- Review of basic aspects of descriptive and inferential statistics: PSYCH 710 assumes that students have taken an undergraduate course in inferential statistics. Some of the important concepts taught in such a course are reviewed in the following documents.
- The following items review important issues regarding significance testing:
- Goodman, S (2008). A Dirty Dozen: Twelp P-Value Misconceptions, Seminars in Hematology, 45(3), 135-40.
- Cohen, J (1994). The earth is round (p<.05). American Psychologist, 49(12), pp. 997-1003.
- Lykken, D.T. (1968). Statistical significance in psychological research. Psychological Bulletin, 70(3), pp. 151-159.
- Gelman, A (2013). P values and statistical practice. Epidemiology, 24(1), 69-72.
- Loftus, G. (1996). Psychology will be a much better science when we change the way we analyze data. Current Directions in Psychological Science, 5, 161-71.
- Krantz, D (1999). The null hypothesis testing controversy in Psychology. J. American Statistical Association, 44(448), 1372-81.
- Significant
- Please don't ever try to boost your results.
- Interesting websites that deal with statistical issues
- Course notes on chapters from the textbook: (N.B. These notes may be modified during the term.)
- If you need a review of basic statistics, please read my notes on testing differences between means. [updated 11-Sep 5:30 PM]
- I created two R scripts that illustrate the central limit theorem. The scripts show the distribution of sample means when the scores are drawn from a uniform distribution and a log-normal distribution. To use the scripts you must download them to your computer and then execute them using R's source command. More detailed instructions, as well as a description of what you will see when the script executes, are provided in the script files (which can be read with any text editor or word processor). If you do open/edit the files with a word processor, make sure to save them as ascii text files.
- R tutorial for conducting t tests for paired and independent samples.
- Chapter 3 (One-way Between-Subjects ANOVA) [updated 29-Sep-2017 9:48 PM]
- A script that contains the R commands that I used in class can be obtained here here.
- A handout that provides an example of how to do a one-way ANOVA in R can be found here.
- Several 1-way ANOVA practice questions can be found here.
- Chapter 4 (Individual Comparisons Among Means)
- Chapter 5 (Multiple Comparisons of Means)
- Illustrations of potential problems associated with doing multiple comparisons can be found here, here, and here.
- Chapter 6 (Trend Analyses) [updated on 28-Sept-2015, 4:00 PM]
- Chapter 7 (Between-Subjects Factorial Designs)
- Here is a paper describing common erroneous analyses of interactions.
- Chapter 9 (Designs with Covariates)
- Chapter 10 (Designs With Random or Nested Factors) [updated on 2-Dec-2014, 7:45 PM]
- Chapter 11 (One-way Within-Subjects Designs: Univariate Approach)
- Chapter 12 (Higher-Order Designs with Within-Subjects Factors)
- Slides
- Week 1 - Review of Inferential Statistics Part 1 [PDF]
- Week 2 - Review of Inferential Statistics Part 2 [PDF]
- Week 3 - One-way ANOVA [PDF]
- Week 4 - Linear Contrasts [PDF]
- Week 7 - Multiple Comparisons [PDF]
- Week 8 - Factorial ANOVA [PDF]
- Interpreting Interactions [PDF]
- Week 11 - ANCOVA [PDF]
- Week 12 - 1-Way Within-Subjects ANOVA [PDF]
- Week 13 - Higher Order Within Subject ANOVA [PDF]
- Practice Questions