DrSmith Conducts an Experiment on Motivation

Multiple Choice

Dr.Smith conducts an experiment on motivation.His experimental group is administered the independent variable.His control group is not.Dr.Smith hires Jack to act as a research subject who has little motivation despite the encouragement provided to him during the experiment.Dr.Smith wants to see how Jack's behavior affects the motivation of the actual research subjects in the experimental group.In this experiment,Jack is serving as

A) the dependent variable.
B) a confederate.
C) an observer.
D) the independent variable.