Why do tribal Africans in middle adulthood show less decline in hearing than people in developed countries do?
a. They are exposed to less noise in their daily lives.
b. They must make loud noises to keep away predators, so they are used to loud noise.
c. They are genetically better at hearing.
d. Their diets have been shown to support hearing.
Answer: A
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The maximum firing rate for individual neurons is 1,000 neural impulses per second. This biological limitation would make it difficult for
a. place theory to fully explain pitch perception. b. opponent-process theory to fully explain color perception. c. trichromatic theory to fully explain color perception. d. frequency theory to fully explain pitch perception.
________________ helping occurs when a helper seeks to increase his or her own welfare by helping another
Fill in the blank(s) with correct word
Which is the best advice for parents wishing to socialize altruistic behavior in their child? a. Don't model altruism
b. Don't force altruistic behavior by threat. c. Don't provide opportunities to practice altruism. d. Don't believe that parenting behavior can impact altruism.
Caleb has just mastered using a spoon in order to feed himself. About how old is Caleb?
A. 1-2 years old B. 2-3 years old C. 3-4 years old D. 4-5 years old