R for Psychology Toolkit

What it does

A complete prompt pack for running and interpreting psychological data analyses in R, with ready-to-run code snippets.

Analyses Included

Descriptives & Assumption Checks

• Normality tests (Shapiro-Wilk, Q-Q plots)
• Levene's test for homogeneity
• Outlier detection and handling

Inferential Statistics

• Independent and paired t-tests
• One-way and factorial ANOVA (with post-hocs)
• Repeated measures ANOVA (ez, afex packages)
• ANCOVA
• Linear, logistic, and multilevel regression
• Mediation and moderation (mediation, lavaan packages)

Reliability & Validity

• Cronbach's alpha and McDonald's omega
• Confirmatory Factor Analysis (lavaan)
• Measurement invariance testing

Visualization

• APA-style ggplot2 themes
• Raincloud plots
• Correlation matrices

Format

Each prompt takes your variable names and returns runnable R code + APA-formatted write-up.