# 11. One-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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## Activity: Multi-Group Multi-Tasking

In this activity from The Learning Scientists’ blog, students are randomly assigned to one of three groups: recite the alphabet, count to 26, or go both by going back and forth (A-1-B-2, etc.). The dependent variable is how long it takes to complete the task. This could be done in class, but could also be …

## Video: One-Way ANOVA (SPSS for Beginners)

Video (11:19) from Research by Design described as follows, “Using the same example from the Wizard of Oz involving Munchkins and wicked witches in various regions that we used learning ANOVA by hand, we are going to learn about conducting a one-way ANOVA using SPSS. We will create the dataset in SPSS, conduct a one-way …

## Video: How to Do an One-Way ANOVA in JASP

Video (14:02) from Research by Design in which, “We are off to see the wizard with an example of a one-way (factorial) ANOVA involving wicked witches and munchkins. We open a .CSV dataset in JASP, check the assumptions of homogeneity of variance and normality, conduct the test, interpret the results, and write up the findings …

## Practice: One-Way ANOVA

In this activity, students will take data from a fictitious multi-group design to practice conducting a One-way 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 set up a data …

## Exemplar Study: Can Using Obscenities Make You More Persuasive? (Multigroup Design)

This multigroup experiment examined the use of an obscenity on thepersuasiveness of a pro-attitudinal message and on perceptions of thecommunicator. Participants watched one of three versions of a video inwhich the speaker advocated lowering tuition at another university. In thefirst version, the speaker used the word “damn” at the beginning of themessage. In the second …

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## Exemplar Study: Social Exclusion and Prosocial Behavior (Multigroup Design)

This article indicated that being excluded from social groups leads todecreases in prosocial behavior. Participants received either no feedback on apersonality measure or one of three types of false feedback that indicated afuture full of rewarding relationships, loneliness, or unfortunate accidents.Participants receiving the social exclusion feedback were unwilling tovolunteer for further lab experiments and, after …

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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: I’m Feeling Hot, But Is the Earth Hot, Too? (MultiGroup Design and One-Way ANOVA)

Key Topics and Links to Files Data Analysis Guide I’m Feeling Hot, But Is the Earth Hot, Too? Analyses Included: One-Way Analysis of Variance (ANOVA) with Post Hoc test and Planned Contrasts; Reliability (Cronbach’s alpha); Chi-Square (Test of Independence) Dataset Syntax Output BONUS: Can Motivational Lyrics Reduce Pre-performance Anxiety and Improve Actual Task Performance? Analyses …

## Design & Data: How Do Parents Respond to Their Child’s Public Tantrums? (Observational Research/Descriptive Statistics)

Key Topics and Links to Files Data Analysis Guide The Many Forms of Discipline in Parents’ Bag of Tricks Analyses Included: Descriptive Statistics (Frequencies; Central Tendency); Inter-observer Reliability (Cohen’s Kappa); Inter-observer Reliability (Pearson’s r); Creating a Mean; Creating a Median Split; Selecting Cases Dataset Syntax Output BONUS: Dyads at Diners (How often and how much …

## Lecture Slides: How Personality Differs across the United States (ANOVA Review)

These slides (created by Dr. Jessica Hartnett) discuss a one-way ANOVA example from published research examining if different parts of the United States exhibit different personalities. In her blog post about it, she includes a link to a Time magazine article about the study, CSV and Excel versions of the dataset. Here is a blog …

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## Open Stats Lab: One-Way ANOVA Activities

Activities focus on the following topics: (ANOVA w/ PLANNED COMPARISONS) Does Reasoning about Personal Problems Improve with Psychological Distance? Here students get to conduct a one-way ANOVA (with planned comparisons) and create a figure. (ANOVA w/ PLANNED CONTRASTS) Can Playing Tetris Reduce the Occurrence of Intrusive Memories? Here students get to conduct a one-way ANOVA …

## Lecture Slides: Something You Will Like (Multigroup Design Demonstration)

In this demonstration/activity (with PowerPoint slides) students are randomly assigned to one of three groups. Those in Group 1 are the picture only condition and simply view the pictures. Those in Group 2 eat cookies while looking at the pictures. Those in Group 3 eat candy while looking at the pictures. The Instructor would need …

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## Exemplar Study: Smells Like Clean Spirit (Two-group Design/Simple Experiment)

In three studies, the authors examined unconscious influence of smell on behavior. Study 3 used a two-group design to examine the direct effect of citrus scent (exposed vs. nonexposed) on cleaning-related behaviors. The judges recorded the frequency of participants’ crumb removal while eating. Holland, R. W., Hendriks, M., & Aarts, H. (2005). Smells like clean …

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