Describe plasticity. Are compensatory changes in the elderly an example of plasticity? Does research using neural stem cells support the idea of plasticity?
ANSWER:
Plasticity in the brain refers to its ability to change in structure and function as a relation of the brain's interaction with the environment. Plasticity refers to brain change or flexibility over time. The fact that research documents that older adults can improve their memories by being trained to use certain strategies in certain circumstances speaks to the brain's ongoing plasticity. Evidence for plasticity is also seen when older adults use bilateral activation. While younger adults use more unilateral activation when working on specific tasks, older adults use more bilateral activation. It appears they are working harder and utilizing more brain structures to optimize their thinking and performance. Finally, it was believed that neurogenesis (the proliferation of neural cells) dwindled with the embryonic period. The finding that neural stem cells exist in adult brains and can generate new neurons throughout the life span speaks to the plasticity of the human brain.
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a. neuroticism b. psychoticism c. agreeableness d. conscientiousness
The authors believe that people tend to report least accurately about:
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Paul wants to conduct research on the neutralization habits of adolescent gang members. What would be the best strategy for him to use to select a sample?
a. reliance on available subjects b. systematic sampling. c. simple random sampling. d. snowball sampling. e. cluster sampling.
According to research, the proportion of students who cheat is often higher among
A. elementary school students. B. college students. C. high school students. D. middle school students.