One theory about the development of Alzheimer's disease suggests that the formation of solid waxy proteins in the brain causes the disorder in a process similar to
a. cholesterol buildup in blood vessels causing cardiovascular disease.
b. vascular spasms causing migraines
c. head trauma causing neuronal death.
d. formation of scar tissue following an injury.
a
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On a submarine with constant artificial light and no sunlight, what happens to a sleep–wake cycle? a. Depending on the brightness of the light, people are always wakeful or always sleepy. b. People become alert when they have something to do, but otherwise sleepy
c. People continue to alternate between wakeful and sleepy on a 24-hour basis. d. People feel wakeful and sleepy on an irregular and unpredictable basis.
According to Erik Erikson, the last stage of psychosocial development involves the conflict between
a. identity and role confusion. b. generativity and stagnation. c. intimacy and self-absorption. d. integrity and despair.
According to research studies, which of the following may contribute to stuttering?
a. Difficulty in controlling eye movements b. Lack of emotional reactivity c. High degrees of parent permissiveness d. Abnormal neural activity in the basal ganglia
In comparison to friendships in earlier childhood, friendships in adolescence
a. are less likely to be formed on the basis of sex. b. are more likely to include people of different ethnicities. c. are more likely to stress the importance of self-disclosure and acceptance. d. are less likely to be determined based upon age.