What is a time-related threat to internal validity for a within-subjects experiment?
A) Carry-over
B) Instrumentation
C) Progressive error
D) Assignment bias

Question

Quizplus · Accepted Answer

Carry-over refers to the possibility of an effect in one treatment condition carrying over and affecting performance in subsequent conditions. This is a time-related threat to internal validity in a within-subjects experiment.

What Is a Time-Related Threat to Internal Validity for a Within-Subjects