Assignment

Your task for this week requires you to examine two of the provided articles under your weekly resources. One article must use a quasi-experimental design; and one article that uses a factorial experimental design.

Health Psychology

Quasi-Experimental Article:

Pata, R. W., Lord, K., & Lamb, J. (2014). The effect of Pilates based exercise on mobility, postural stability, and balance in order to decrease fall risk in older adults.Journal of Bodywork and Movement Therapies, 18(3), 361-367.

Factorial Article:

Allison, M. & Lee, C. (2015). Too fat, too thin: Understanding bias against overweight and underweight in an Australian female university sample. Psychology & Health, 30(2), 189-202.

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

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

Explain how the groups differ.

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

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

For the Factorial Design article, answer the following:

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)

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

Explain how your groups differ.

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

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)?

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

Did authors address these threats?

Length: 5-7 pages.