Internal validity of an experimental study is threatened by:

Question

Quizplus · Accepted Answer

Demand characteristics refer to cues within an experiment that give participants clues about how they are expected to behave. These cues can influence participants' responses, which can threaten the internal validity of an experiment. A, B, and C do not necessarily threaten internal validity. The qualifications of the researcher may affect external validity, but not internal validity. Random assignment helps ensure that groups are equivalent at the start of an experiment, and experimental conditions directly relate to the manipulation being studied.

Internal Validity of an Experimental Study Is Threatened By