13. Two-Way Analysis of Variance (ANOVA)

Student Guide to SPSS and APA Style Writing (v.12.0)

This guide (created by Gary Lewandowski; Twitter: @LewandowskiPhD) is a free resource that can substitute for the APA Manual and SPSS guides. The Student Guide leads students through data analysis in SPSS with step-by-step instructions and screenshots for setting up the analyses and interpreting the output. For each analysis, students also see an example SPSS …

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Practice: Two-Way (Factorial) ANOVA

In this activity, students will take data from a fictitious 2 x 2 factorial design to practice conducting a Two-Way (Factorial) Analysis of Variance (ANOVA). First, provide students with the research scenario and the accompanying questions to have them determine the research design, statistical analysis to use, and independent and dependent variables. Next, have students …

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Exemplar Study: Texting to Ostracize (Factorial Design)

This study sought to determine if a woman’s appearance influences perceptions of her ability to perform a job. Undergraduates rated photographs of women as part of a 2 (Career: office assistant vs. CEO ) X 2 (Appearance: professional attire vs. sexual attire) design. Participants rated photos along several dimensions such as grade point average, organizational …

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Exemplar Study: How Does Attire Influence Perceptions of Women in the Workplace? (Factorial Design)

This study sought to determine if a woman’s appearance influences perceptions of her ability to perform a job. Undergraduates rated photographs of women as part of a 2 (Career: office assistant vs. CEO ) X 2 (Appearance: professional attire vs. sexual attire) design. Participants rated photos along several dimensions such as grade point average, organizational …

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Lecture Slides: The Pepsi Challenge (Factorial Design Demonstration)

In this demonstration/activity (with PowerPoint slides) eight student volunteers have the opportunity to provide taste ratings for soda.  Instructors would need to provide cups and soda (usually a 16 oz bottle of each type of soda is enough). Type of soda can vary, but students seem to like the Pepsi vs. Coke dynamic. Another fun …

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Design & Data: How Do You Know If You Are Truly Helping? (Program Evaluation)

Key Topics and Links to Files Data Analysis Guide Applying Your Skills in the Real World: How Do You Know If You Are Truly Helping? Analyses Included: Single Sample t-test; t-test for Independent Means; Creating a Mean; Descriptive Statistics (Central Tendency)   Dataset Syntax Output BONUS – STUDY 1: How Can We Reduce Underage Drinking? …

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Design & Data: Which Therapy is Best for Treating Eating Disorders? (Mixed Design and Mixed/Repeated-Measures ANOVA)

Key Topics and Links to Files Data Analysis Guide Which Therapy is Best for Treating Eating Disorders? Analyses Included: Mixed ANOVA/Repeated-Measures ANOVA Dataset Syntax Output BONUS: Do Others Help or Hinder Performance? Analyses Included: Mixed ANOVA/Repeated-Measures ANOVA Dataset Syntax Output Design Summary (for the chapter study and the bonus data) Research Question Design Main Analysis …

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Design & Data: Do Pick-up Lines Really Work? (Factorial Design and Two-Way ANOVA)

Key Topics and Links to Files Data Analysis Guide “I Lost My Phone Number, Can I Borrow Yours?” Do Pick-up Lines Really Work? Analyses Included: Two-Way ANOVA Dataset Syntax Output BONUS: Do Tattoos and How You Dress Influence Whether Someone Will Help You?   Analyses Included: Two-Way ANOVA; Descriptive Statistics (Frequencies) Dataset Syntax Output Design …

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Open Stats Lab: Two-Way (Factorial) ANOVA Activities

Activities focus on the following topics: (TWO-WAY ANOVA) Do People Judge Physical Distances of Locations Based on Their Psychological Orientation Toward Them? Here students get to conduct a two-way (factorial) ANOVA, tests for the interaction, and create a figure. (MIXED ANOVA) Do People Underestimate the Pleasure of Remembering Ordinary vs. Extraordinary Events? Here students get …

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Online Activity: Factorial Design Concepts Review

This interactive application (created by Dr. Marcie Desrochers and Dr. Sara Margolin) provides supplemental instruction on factorial research designs that students enrolled in a Statistics or Research Methods course in psychology can complete as homework or on their own. It consists of 10 pages of definitions, examples, and images, and 11 quiz questions that help …

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