Experimenter bias can threaten both internal and external validity because the results obtained in a study
A)may be specific to an experimenter with a certain set of characteristics.
B)may be specific to the experimenter who has the expectations.
C)may be specific to the cues about how to behave.
D)may be specific to the participants' knowledge that they are being measured.

Question

Quizplus · Accepted Answer

Experimenter bias refers to a situation in which an experimenter's expectations about the outcome of a study influence the results obtained. This can threaten internal validity by making it difficult to determine whether changes in the dependent variable are actually a result of the independent variable or simply the experimenter's expectations. It can also threaten external validity if the results obtained are specific to the experimenter who conducted the study, rather than reflecting a more general phenomenon.

Experimenter Bias Can Threaten Both Internal and External Validity Because