Over a two-week period, higher serotonin levels were associated with
a. higher levels of both positive and negative feelings.
b. lower levels of both positive and negative feelings.
c. higher levels of positive feelings and lower levels of negative feelings.
d. lower levels of positive feelings and higher levels of negative feelings.
B
Psychology
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The genetic sex of a fetus is determined by
a. the hormones produced by the pituitary during fetal development. b. a single gene on the X chromosome. c. the gonads. d. the father's sperm. e. the phase of the menstrual cycle during which fertilization occurs.
Psychology
Which of the following is an example of a secondary sex characteristic?
A) increased body hair B) growth of ovaries C) growth of testes D) growth of penis
Psychology