When one treatment condition has a lasting effect on individuals that influences their scores in future treatments,the study is confounded by
A)history.
B)instrumentation.
C)carry-over effects.
D)progressive error.

Question

Quizplus · Accepted Answer

Carry-over effects occur when one treatment or condition has a lasting effect on individuals that carries over to future treatments or testing sessions. This can lead to confounding variables and affect the validity of the study.

When One Treatment Condition Has a Lasting Effect on Individuals