Change in personality occurs mostly
A) during childhood and adolescence.
B) after age 30.
C) before age 50.
D) in men rather than women.
Answer: A
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Which behavior is considered a negative symptom of schizophrenia?
A. Delusions B. Social withdrawal C. Hallucinations D. Disorganized speech
The main purpose of single-subject research is:
a. descriptive. b. experimental. c. assessment of behavior with limited time. d. either descriptive or experimental.
According to Melzack and Wall's "gate theory" of pain, why does rubbing your elbow after you bump it help reduce the pain? a. Rubbing produces an increased release of endorphins
b. Rubbing produces a refractory period in nociceptors, preventing their further activation. c. Input from rubbing competes with ascending pain messages. d. The act of rubbing has a placebo effect on the pain.
What risk level is involved in studies that employ anonymous questionnaires that evaluate hypothetical people?
a. high c. minimal b. moderate d. no