The results of a study may be influenced by the fact that a participant knows he or she is being studied.This threat to external validity is
A)reactivity.
B)novelty.
C)experimenter bias.
D)volunteerism.

Question

Quizplus · Accepted Answer

Reactivity refers to the tendency of participants to alter their behavior due to the knowledge of being observed or studied. This can pose a threat to the external validity of the study as it may affect the generalizability of the findings to real-world settings. The other options (novelty, experimenter bias, and volunteerism) do not directly relate to this particular threat to external validity.

The Results of a Study May Be Influenced by the Fact