People who participate in an experiment, whose reactions or responses are observed as part of the experiment, usually to test the validity of a hypothesis, are called ________.
A) stooges
B) partners
C) participants
D) assistants

Question

Quizplus · Accepted Answer

Participants are the individuals who are involved in the experiment and have their reactions or responses observed. Stooges may refer to individuals who are used as decoys or actors in an experiment, but not necessarily as participants. Partners or assistants may be involved in the experiment, but not as the main individuals whose reactions are being studied.

People Who Participate in an Experiment, Whose Reactions or Responses