A psychologist wants to create two groups that are as similar as possible at the beginning of an experiment.To do this,she should use:
A) random sampling
B) random assignment
C) self-report methods
D) participant observation

Question

Quizplus · Accepted Answer

Random assignment is the best choice for creating two groups that are as similar as possible at the beginning of an experiment. It involves assigning participants to groups at random, which helps to ensure that any differences between the groups are due to the treatment being studied, rather than pre-existing differences between the participants. Random sampling, self-report methods, and participant observation do not address the issue of creating similar groups at the start of an experiment.

A Psychologist Wants to Create Two Groups That Are as Similar