A Researcher Wants to Study the Effects of Frustration on Later

Multiple Choice

A researcher wants to study the effects of frustration on later aggressive behavior by frustrating half the participants and then measuring the amount of hot sauce they give to a confederate.She tells the participants this is a study of "Individual Differences in Taste Preference." Why did she tell them this?

A) to prevent demand characteristics
B) to sensitize participants to the purpose of the study
C) to manipulate frustration
D) to prevent confounds