Marybeth is an older adult who has quit volunteering at the food pantry she used to spend 5 hr a week sorting foods. She has stopped going to morning coffee with her friends. She is not called to help at her church as much as she did in the past. What theory explains Marybeth's behavior?
A. activity theory
B. continuity theory
C. disengagement theory
D. socioemotional selectivity theory
Answer: C
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Which of the following is true regarding injured neurons?
a. No new central nervous system cells are produced after infancy. b. It is now possible to regenerate axons in people with spinal cord injuries. c. It is impossible to regrow spinal-cord axons after damage. d. Severed spinal-cord axons in an animal can regrow if treated with certain nervous system chemicals.
Self-generation and self-monitoring of one's thoughts, feelings, and behaviors in order to reach a goal is
A. self-regulatory learning. B. self-esteem learning. C. self-efficacy learning. D. self-discovery learning.
According to one prominent theory, monogamy evolved in only those species
A) in which each female could raise more fit young if she had undivided help. B) with opposable thumbs. C) with large brains. D) that used tools. E) all of the above
To select participants for an experiment, it is most appropriate to sample from one population, and then randomly assign participants to different groups.
Answer the following statement true (T) or false (F)