Quasi experimental and experimental design

For the Quasi-Experimental Design article, answer the following:

1-Operationally define both the (quasi) independent and dependent variables.

2-Explain how the groups differ.

3-Explain why, in this case, a quasi-experimental design was used (rather than an experimental design).

4-Describe the threats to validity (external or internal) in article. Did authors address these threats?

For the Factorial Design article, answer the following:

1-Operationally define both the (quasi) independent and dependent variables.

-Explain the levels of the independent variable.

-How many independent variables were used?

-Describe the design (e.g. 4 x 2 x 2 factorial design)

2-Identify the main effects in this study (e.g. , experienced versus non-experienced; cognitive therapy versus psychoanalytical).

3-Explain how your groups differ.

4-Explain why, in this case, a factorial design was used.

5-Did the authors use a participant variable?

-Why or why not?
-What additional information was obtained including a participant (or might be obtained, if a participant was not included)?

6-Describe the threats to validity (external or internal) in article.

-Did authors address these threats?