Experimenter Expectancy Effects Are

Experimenter expectancy effects are:

A) subtle and unintentional cues that participants pick up about the hypotheses of an experiment.
B) subtle and unintentional ways that experimenters can influence their participants to respond in ways consistent with experimental hypotheses.
C) instances where participants improve because of their expectations rather than the actual treatments they receive.
D) instances where experimenters mistakenly use random selection instead of random assignment.