1. Describe how you would design a cross sectional longitudinal study to examine how intelligence changes from the age of 20 to 80. Note: focus on the structure and the specific measurements that you would use.

2. You are a teacher, and you want to determine if a new means of teaching material is more effective than your current methods. Next semester you have two different sections of the same class on experimental design (i.e., two of same exact class). Design a non- or quasi-experimental study to try gather evidence about which teaching method may be more effective. As you design this study, try to make it the best study possible by limiting the number of threats to internal validity, but realize that you can't control which students enroll in which section.