Your vision adapts to faint light through what mechanism?
a. The pupils constrict
b. Visual receptors build more of the molecules that respond to light.
c. Visual receptors increase the velocity of their action potentials.
d. The brain shifts its attention to enhance weak action potentials.
b
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According to Sigmund Freud, the Electra complex, the psychosexual conflict that occurs at the phallic stage of development in girls, is characterized by
A. castration anxiety. B. Oedipal conflicts. C. penis envy. D. latency lust.
One gene that suppresses the expression of another gene in a pair of alleles is called a(n) __________ gene
a. repressed b. recessive c. dominant d. expressed
A researcher post flyers around the community to recruit families for his research. He desires a
sample size of 100 and after 2 days, has already recruited 50 African -American families. Because 50% of the community population is African-American, he decides to discontinue recruitment for this group, but continue recruiting participants of other ethnic groups. This sampling method is known as __________ sampling. Fill in the blanks with correct word
Which of the following causes people to participate in an activity for their own enjoyment rather than for any actual or concrete reward that it will bring them?
A. observable factors B. intrinsic motivation C. extrinsic motivation D. external factors