When subjects act differently because they are aware that they are in an experiment, it is called the:
A) history effect.
B) Hawthorne effect.
C) maturation effect.
D) cohort effect.

Question

Quizplus · Accepted Answer

The Hawthorne effect is the phenomenon where subjects alter their behavior simply because they know they are being observed in an experiment. The history effect refers to external events that may influence a subject's behavior, the maturation effect refers to changes in subjects over time, and the cohort effect refers to the influence of a subject's birth year or generation.

When Subjects Act Differently Because They Are Aware That They