A psychologist wishes to test a behavioral modification therapy that is claimed to improve the behavior of preteen autistic children.She randomly selects 20 preteen autistic children and exposes half of the group to the behavioral modification therapy; the other half continue with their standard treatment regimen.A standardized behavioral test is administered to each child both before and after treatment.The population in this experiment is:
A) all preteen autistic children.
B) the behavioral modification therapy.
C) the standardized behavioral test scores.
D) the 20 selected preteen autistic children.

Question

Quizplus · Accepted Answer

The population in this experiment is all preteen autistic children because the psychologist wants to determine if the behavioral modification therapy can improve the behavior of preteen autistic children in general, not just the 20 selected children. Therefore, the sample (the 20 selected children) is being used to make inferences about the population (all preteen autistic children).

A Psychologist Wishes to Test a Behavioral Modification Therapy That