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A research method involving lengthy, detail information about a person's background, usually used for psychological treatment, is the ___.

a) double-blind study.
b) case study method.
c) survey.
d) interview.

2 Answers

1 vote
B) Case study method due to the procedures that were listed ;)
User Eric Sauer
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6 votes
Answer:

B. case study method
User Jokies Ding
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