1. For each of the following central research questions, indicate the independent and dependent variables and suggest an appropriate control group:
a) Does playing on a sports team affect students' behavior?
b) Are students' attention spans affected by eating breakfast?
c) Does wearing brand-name clothing affect the number of friends a student has?
2. Write three social science central research questions on issues that are important to you. For each central research question, indicate the independent and dependent variables and a possible control group.