A researcher systematically varies people's stress levels to examine the effects of stress on performance.The researcher includes a measure of stress as
A)a measure of the dependent variable.
B)a measure of extraneous variables.
C)a control for confounding variables.
D)a manipulation check.

Question

Quizplus · Accepted Answer

A manipulation check is used to determine if the manipulation of the independent variable (in this case, stress levels) has been successful.

A Researcher Systematically Varies People's Stress Levels to Examine the Effects