When do you know whether you're a boy or a girl?
a. between the ages of 5 and 7
b. between the ages of 2 and 3
c. when you first see opposite sex genitals
d. it's never really "learned"—it's something you always know
B
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When researchers ask men and women to write descriptions of themselves, women are more likely than men to include statements about
A. where they live. B. their roles as parents and family members. C. their physical appearance. D. their age.
Recent research indicates that attitudes about the purpose of sex fall into which of the following three categories?
propagation, partnership, and pleasure reproduction, relationship, and recreation pregnancy, marriage, and love the desire to produce offspring, the need to settle down, the longing for intimacy
Biologist Charles Darwin proposed the concept of _____, which was the principle that organisms that possess adaptations survive and reproduce at a higher rate than do other organisms
Fill in the blank with correct word
Of the various hypotheses based on hormone levels, which is the most plausible explanation for male homosexuality?
A. Adult testosterone levels are low. B. Adult estrogen levels are high. C. Prenatal testosterone levels were low during some sensitive period. D. Prenatal estrogen levels were high during some sensitive period.