The possible threat of participants having experience with the variables in a within-groups design when they experience those variables for the second time is known as:
A) order effects.
B) counterbalancing.
C) repeated effects.
D) stimulus repeating.

Question

Quizplus · Accepted Answer

Order effects are the possible impact that the order of presenting different conditions might have on the results of a within-groups design. This effect becomes a threat when participants develop certain expectations based on the previous experience with the condition and respond differently in subsequent trials. This can happen because they become bored or tired of the task, or because they learn from the previous trial and modify their behavior.

The Possible Threat of Participants Having Experience with the Variables