Determine whether the follow descriptions correspond to an observational study (

Question

Determine whether the follow descriptions correspond to an observational study (OS), a controlled experiment (CE), or a double blind experiment (DBE). Write the abbreviations above as your answers. (without the parenthesis) (a) A therapist compiles information on his/her patients who have survived child abuse to explain the effects of child abuse on adult survivors. answer: (b) A doctor gives half of his/her patients in a study a treatment and the other half a placebo, but the patients do not know which they received. answer: (c) A nurse gives a group of patients either the drug being studied or a placebo: however neither the nurse nor the patient knows which they are receiving. Only the person who prepared the doses knows. answer:

Explanation / Answer

a) os

b) ce

c) dbe                                                         

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