An investigator was interested in the effects of various treatments on reduction

Question

An investigator was interested in the effects of various treatments on reduction of fear in phobic participants. He suspected that type of phobia may interact with therapeutic treatments, specifically, that the types of treatments for agoraphobics (fear of open spaces) and claustrophobics (fear of closed spaces) might be different. He divided participants into two groups based upon type of fear and then assigned members of each group to a treatment group: desensitization, insight, or implosive therapy. After three months of treatment, participants’ anxiety in the feared situation was measured.

a.) Identify the design (be specific; e.g., 2 x 2 repeated measures factorial design)

b.) Identify the independent variable(s)

c.) Identify the dependent variable(s)

d.) Identify possible main effects

e.) Identify any possible interactions

Explanation / Answer

a).

b)The independent variables are the different types of treatment (desensitization, insight, and implosive therapy for agoraphobics and desensitization, insight, and implosive therapy for claustrophobics). Independent variables are the ones you can change around and look to see how they affect the dependent variable.
C) The dependent variable is anxiety.

d)

e)

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