A researcher is trying to develop an improved version of cognitive behavioral treatment (deluxe CBT) for depression. He recruits 50 patients with a depression diagnosis and randomly assigns them to two groups (25 patients in each group). One group gets the new treatment (deluxe CBT) and the other group gets standard treatment. He then measures their depression symptoms one month later. a. What type of research design (correlational vs. experimental) is this? [Be as specific as possible with the name.] b. What is the independent variable and the dependent variable? c. Is this a good or bad study design for making statements about causality? If yes, why? If no, what design would be better?
A researcher is trying to develop an improved version of cognitive behavioral treatment (deluxe CBT) for depression. He recruits 50 patients with a depression diagnosis and randomly assigns them to two groups (25 patients in each group). One group gets the new treatment (deluxe CBT) and the other group gets standard treatment. He then measures their depression symptoms one month later.
a. What type of research design (
b. What is the independent variable and the dependent variable?
c. Is this a good or bad study design for making statements about causality? If yes, why? If no, what design would be better?
(a)
The given research design is an experiment because the individuals are kept under experimental conditions and are provided with the independent factor.
The given case is an example of simiple random experimental design.
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