The change in the dependent variable that occurs because members of one experimental group experienced different historical situations than members of other experimental groups is called a(n)____.
A)cohort effect
B)Hawthorne effect
C)testing effect
D)instrumentation effect

Question

Quizplus · Accepted Answer

The cohort effect occurs when individuals in one experimental group have experienced different historical factors or environmental influences than individuals in another experimental group, leading to a change in the dependent variable. The Hawthorne effect occurs when participants in a study alter their behavior because they know they are being observed, the testing effect refers to improved performance on a task due to repeated exposure or practice, and the instrumentation effect occurs when changes in the measurement instrument or equipment used in a study affect the observed results.

The Change in the Dependent Variable That Occurs Because Members