In an experiment, the ____________________ is manipulated by the investigator in order to determine whether it has an effect on behavior
Fill in the blank(s) with correct word
independent variable
Psychology
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Research on sex hormones suggests that ________
a. fluctuating levels of progesterone make women emotional before menstruation. b. the testes are the only site for the production of androgens. c. estrogen enhances learning and memory. d. estrogen and progesterone are produced only by females.
Psychology
It is a misconception that females are primarily responsible for infertility, because ____% of the time it is the male who is the source of a couple's infertility
a. 40 b. 50 c. 60 d. 70
Psychology