Please Help!

research question: Does having more money mean you are happier?

1. What is the best research design (correlational, experiment, quasi-experiment) to use for this research question?

2. What are the operational definitions in your study?

3. What behavior(s) that you observe will answer the research question (i.e., how will you know the answer from the behaviors you are observing)?

4. What are some alternative explanations of those behaviors (other than the factor listed in the research question)?