According to heritability estimates, what percentage of the variability in IQ can be explained by genetics?
A. Hardly any
B. About half
C. Nearly all
D. It differs by sex and race
Answer: B
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When we have considerable spread of the points about the regression line, the slope of that line will be _______ the slope of a similar line when there is less scatter
a. less than b. more than c. the same as d. more extreme than
Yarema is a cyclist. He notices that whenever he trains with someone else, his time improves markedly. In the context of group behavior, this phenomenon occurs due to a process known as _____
A) social facilitation B) social loafing C) polarization D) groupthink
Pablo is under a lot of stress. His brother, Horatio, on the other hand, is experiencing little stress. Who is most likely to have a greater number of leukocytes in their bloodstream?
a. ?Pablo b. ?Horatio c. ?Peter d. ?Both will have equal numbers.
Each of the following is true of the tip-of-the-tongue phenomenon EXCEPT ______
a. it is more likely to occur during stressful situations b. it is more likely to occur as people get older c. the harder you try to recall the word, the worse it becomes d. its frequent occurrence is linked to early-stage Alzheimer's disease