Personality Variables Zack is excited about how experimenter personality can positively influence subject performance.He says, "This is so cool! I'm going to smile at all my experimental subjects and they're going to perform like Pavlov's dog for me." What issue has Zack overlooked?
A)external validity
B)internal validity
C)selection threat
D)selection-interaction threat

Question

Quizplus · Accepted Answer

Zack has not considered internal validity, which refers to ensuring that the effects observed in an experiment are actually due to the manipulation of the independent variable and not some other factor. By intentionally behaving a certain way with his subjects, Zack may inadvertently create demand characteristics, in which the subjects pick up on cues and adjust their behavior accordingly to please the experimenter. This can lead to false positive results and threaten the experiment's internal validity.

Personality Variables Zack Is Excited About How Experimenter Personality Can