A psychologist wants to be sure that her research findings do not result from age or personality differences between participants in the experimental and control groups.She should use
A) replication.
B) random assignment.
C) operational definitions.
D) the double-blind procedure.

Question

Quizplus · Accepted Answer

Random assignment helps ensure that age and personality differences are equally distributed between the experimental and control groups, making it the best choice in this scenario. Replication involves conducting the same study multiple times to see if the results are consistent, which does not directly address the issue of age and personality differences. Operational definitions ensure that the variables being studied are defined in a consistent and measurable way, but do not directly address the issue of group differences. The double-blind procedure is a method for controlling for experimenter bias and participant demand characteristics, but again, does not directly address the issue of group differences.

A Psychologist Wants to Be Sure That Her Research Findings