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 many cells does this study have?
A) 2
B) 4
C) 6
D) 10

Question

Quizplus · Accepted Answer

This study has 6 cells, as it involves two independent variables (study condition and retention interval) with three levels each, resulting in a 2 x 3 design. Therefore, there are six possible combinations or cells in the design.

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