During a night's sleep, people ______
a. usually increase the duration of REM periods as the night progresses
b. go through the five stages of sleep just once
c. progressively decrease the latent content of their dreams
d. dream only during REM periods
A
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Chinese infants are generally more expressive than European, American, and Japanese infants.
Answer the following statement true (T) or false (F)
The _____ assumes that humans are motivated to reduce tension, whereas the _____ assumes humans are sometimes motivated to increase tension
a) drive-reduction theory; arousal theory b) arousal theory; hierarchy of needs c) drive-reduction theory; instinct theory d) arousal theory; drive-reduction theory
Studies of heritability in humans that assume that if genes influence a certain trait, close relatives should be more similar with that trait than distant relatives are called ________ studies
a. strain b. selection c. family d. twin
Declines in __________ functioning contribute to many conditions of aging, including increased susceptibility to infectious disease and cancer
A) nervous system B) connective tissue C) circulatory system D) immune system