1. What aspects of a study allow tests of causal relationships? 2. In what way does a time series design differ from a simple pretest-posttest design that includes only one pretest and one posttest...

1. What aspects of a study allow tests of causal relationships?

2. In what way does a time series design differ from a simple pretest-posttest design that includes only one pretest and one posttest measure?

3. Choosing a research question of interest to you, design a quasi-experiment that uses the pretest-posttest with nonequivalent groups design. Describe how your study is to be conducted.