Gabriel is a psychologist who is interested in the effects on human performance when robots are used on assembly lines. He convinces a local factory to allow him to add robots to some of the assembly lines. He predicts that participants working on an assembly line where robots are added will be more productive. He is proposing an experimental study to examine this belief.

-Identify the independent variable in the study.
-Identify the control group in this study.
-Provide an example of a valid operational definition of “worker productivity.”
-Explain how random assignment would help establish cause and effect in this experiment.
-Explain why it would be difficult to use a double-blind procedure for this study.

Suppose Gabriel finds that humans performed worse when working with robots.
-Explain how learned helplessness might be related to these findings.