An artifact such as experimenter bias is a threat to the validity of measurement because the ____.
A) outcome measurements may be distorted by the artifact
B) artifact is an external factor, unrelated to the experiment
C) artifact will allow participants to identify the experimental manipulation
D) artifact will reduce reliability which will, in turn, reduce validity

Question

Quizplus · Accepted Answer

Experimenter bias is a type of measurement bias that occurs when the experimenter's expectations, beliefs, or attitudes influence the outcome measurements. This can distort the results of the study and threaten the validity of the measurement. Choices B and C are incorrect because experimenter bias is an internal factor related to the experiment, and it does not necessarily allow participants to identify the experimental manipulation. Choice D is also incorrect because while experimenter bias may reduce reliability, it can also reduce validity.

An Artifact Such as Experimenter Bias Is a Threat to the Validity