PSYC 305 Lecture 19: PSYC 305 N19

24. You would really like to minimize any possible experimenter expectancy effects in your study. What can you do? A) use a double-blind procedure B) use a placebo C) decrease internal validity D) increase the demand characteristics E) nothing - you cannot minimize experimenter effects

3. Research participants are randomly assigned to different groups in an experiment in order to a increase chances that participants are representative of people in general b. minimize chances that participants in any group know each other. o minimize any differences between groups of participants. d increase chances that the different groups have the same number of participants.