The hormone melatonin helps synchronize the sleep-wake cycle by means of
a. stimulating the hypothalamus to activate the sleep cycle.
b. triggering the SCN when the amount of light striking the retina declines. c. traveling to the amygdala to activate the sleep cycle.
d. inducing feelings of drowsiness.
e. inducing alertness just preceding awakening.
d
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What is a specific but limited time, usually early in an organism's life, during which the organism is particularly susceptible to environmental influences relating to some particular facet of development?
A. latent period B. sensitive period C. critical period D. plasticity period
Adoption studies have shown that __________ children become __________ similar with age in general cognitive ability.
A. genetically unrelated; more B. genetically identical; less C. genetically related; more D. genetically related; less
Changing the sentence "Jean gave Sid a birthday gift" to "Sid was given a birthday gift by Jean" illustrates the use of
a. the semantic differential. b. connotative meanings. c. transformation rules. d. conceptual rules.
A substance consisting of epidermal cells that collect in moist areas of the genitals, especially under the clitoral hood in women, is known as ____
a. curettage c. speculum b. fimbriae d. smegma