A threat to external validity that occurs when attitudes projected onto individuals cause them to act in a certain way is called the
A) Hawthorne effect.
B) placebo effect.
C) social desirability effect.
D) expectancy effect.

Question

Quizplus · Accepted Answer

The expectancy effect occurs when an individual's expectations or the expectations of those around them influence their behavior, often seen in experimental settings where the subject behaves in a way that they believe is expected of them. This can threaten the external validity of a study by causing participants to act in ways that are not natural to them but are influenced by the expectations projected onto them.

A Threat to External Validity That Occurs When Attitudes Projected