A researcher is interested in whether circadian rhythms influence participants' performance on different kinds of memory tests.The researcher first classifies participants according to whether each is a morning person or an evening person.The researcher then randomly assigns participants to receive either an implicit memory test or an explicit memory test.The researcher then tests everyone at 8 a.m.How should the ANOVA used to analyze the data be labeled?
A) 4 × 2 between-groups ANOVA
B) 4 × 2 within-groups ANOVA
C) 2 × 2 between-groups ANOVA
D) 2 × 2 within-groups ANOVA

Question

Quizplus · Accepted Answer

The independent variables are circadian rhythm (morning or evening person) and type of memory test (implicit or explicit). Both independent variables are between-groups variables since participants are only in one category for each variable. Therefore, the ANOVA should be labeled as a 2 × 2 between-groups ANOVA.

A Researcher Is Interested in Whether Circadian Rhythms Influence Participants