Sandra Scarr and Kathleen McCartney proposed the theory of genotype -> environment effects. Which subtype occurs in biological families because parents provide both genes and environment for their children?
a. Passive genotype -> environment effects
b. Evocative genotype -> environment effects
c. Active genotype -> environment effects
d. Inactive genotype -> environment effects
A. It's difficult to separate genetic influences from environmental influences because parents provide both.
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Theory X leadership has been used to refer to an approach also known as
a. psychological efficiency. b. participative management. c. job enrichment. d. scientific management.
Sleep studies suggest that around 28% of Americans
A) get more than 6 hours of sleep a night. B) report feeling excessively sleepy during the day. C) have insomnia. D) need less than 5 hours of sleep a night.
A statistically significant correlation means that ____
a. the correlation is large b. the correlation is small c. the variables are unlikely to be related d. there is a real relationship between the variables
When Sperling visually displayed three rows of three letters each for only 1/20th of a second, experimental participants:
a. appeared to have a momentary photographic memory of all the letters in the display b. recalled about seven letters, due to the limits of short-term memory c. recalled the letters in the first and last rows, but not the letters in the middle row d. recalled very few letters, because they didn't have enough time to see them all