1. What were the major concepts in the research question(s)? How clearly were they defined?

2. Did the measures of the variables seem valid and reliable? How did the authors attempt to establish this (e.g., did they establish face validity, content validity, criterion validity, construct validity? Did they establish test-retest reliability, interitem reliability, alternate form reliability, interobserver reliability)? Could any more have been done in the study to establish measurement validity?

3. Was an experimental design used? If so, which type of experimental design was it? What was the treatment? What was (were) the outcome(s)? How were subjects in the experimental group and the control group assigned?  How were pretesting and posttesting done?

4. Identify sources of internal and external invalidity that are not controlled by the experimental design.     

Do not use any other references or sources, only use what I have provided you and that is Gitlin et al. 2001.pdf