When a researcher finds that the same instructions to the participants in a memory experiment have different effects on their memory depending on how they are tested,
A) there is a main effect for type of test.
B) there is a main effect for instructions given to the participants.
C) there is an interaction between instructions and type of test.
D) there is no effect of instructions.

Question

Quizplus · Accepted Answer

This scenario describes an interaction effect between the instructions given to participants and the type of test used. An interaction occurs when the effect of one independent variable on the dependent variable changes depending on the level of another independent variable. In this case, the impact of instructions on memory performance varies depending on the type of test administered, indicating an interaction between these two factors.

When a Researcher Finds That the Same Instructions to the Participants