Roediger and Karpicke (2006) investigated whether the test-enhanced learning effect (the demonstration that repeated testing improves memory for material) was due merely to repeated exposure to material.They randomly assigned participants to one of two study conditions (study-study or study-test) and to one of three retention interval conditions (final test at a delay of 5 minutes, 2 days, or 1 week).The dependent variable was the proportion of idea units recalled from an encyclopedia passage.How should the analysis of these data be labeled?
A) 4 × 2 between-groups ANOVA
B) 2 × 3 within-groups ANOVA
C) 2 × 3 between-groups ANOVA
D) 2 × 2 within-groups ANOVA

Question

Quizplus · Accepted Answer

The study design involves two independent variables: study condition (study-study vs. study-test) and retention interval (5 minutes, 2 days, 1 week), both of which vary between participants. This makes it a 2 × 3 between-groups ANOVA.

Roediger and Karpicke (2006) Investigated Whether the Test-Enhanced Learning Effect