Martin performed an experiment at the local university.Students were measured on their views towards stem cell research,then shown a documentary on the topic.After the film,the students were given a survey to measure their opinion.This survey after the movie is an example of a(n):
A)independent variable.
B)posttest.
C)pretest.
D)experimental group.
E)control variable

Question

Quizplus · Accepted Answer

The survey given after the movie is a posttest, as it measures the students' opinions after being exposed to the documentary. Independent variables are factors that are manipulated or changed in an experiment, pretests are measures taken before the experiment, experimental groups are the groups that receive the experimental treatment, and control variables are factors that are kept constant in an experiment.

Martin Performed an Experiment at the Local University