One threat to the internal validity of research that affects both true experiments and quasi-experiments is
A) selection threats.
B) additive effects with selection.
C) experimenter expectancy effects.
D) all of these

Question

Quizplus · Accepted Answer

Experimenter expectancy effects can influence the outcomes of both true experiments and quasi-experiments, as they involve the researcher's expectations potentially affecting the participants' behavior or the data interpretation.

One Threat to the Internal Validity of Research That Affects