Which of the following is true of premenstrual syndrome?
A) It is more severe than premenstrual dysphoric disorder.
B) It cannot be treated or prevented.
C) It refers to the absence of menstruation.
D) It may be linked to hormonal fluctuations.
D
Psychology
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In general, adolescents tend to rate themselves as
A) always happy. B) more happy than sad. C) much more sad than happy. D) sad and happy about equal amounts of time.
Psychology
At the end of each day's work, workers hired on a temporary basis receive that day's wages in cash. The cash may be described as
a. a positive, primary reinforcer. b. a positive, secondary reinforcer. c. a positive, generalized reinforcer. d. a negative, generalized reinforcer.
Psychology