Imagine that you are designing an experiment to study whether hearing their father's voice causes infants to become happier.

1. Why might it be more appropriate to use an experimental design than a correlational design for this study? Explain your answer.

1. If you were the researcher, what would you (A) choose as an independent variable (IV) for this study, (B) choose as a dependent variable (DV) for this study, (C) do to ensure reliability, and (D) do to ensure validity? Answer each part carefully.

1. What are the limitations to using an experimental design over a correlational design?

Now let's imagine that you want to help your neighbors, who are parents to a teenage daughter. Their daughter is notorious for losing and breaking expensive electronics such as her cell phone. Help your neighbors teach their daughter to be more careful with her electronics.

1. In this case, would be more appropriate to use operant conditioning or classical conditioning? Why? Explain your answer.

1. Using your answer to #4, come up with two suggestions for the parents to help their daughter be more mindful with her electronics.