According to social brain theory, what enables humans to connect with one another?
a. availability of essential needs
b. mating rituals
c. adaptive skills
d. psychological traits
D
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Professor Neuberg found that the mean number of alcoholic drinks consumed at a party was much higher for males than for females. If the median and mode number of drinks consumed by males and females was both zero, how can the difference in means be explained?
a. The mean number of drinks consumed by females was disproportionately increased by outliers drinking lots of drinks. b. The mean number of drinks consumed by males was disproportionately increased by outliers drinking lots of drinks. c. The difference in means gives no information that is useful and should not be explained. d. The difference most likely comes from an error in calculation.
A primary reinforcer ____ the likelihood that the preceding behavior will be repeated. A secondary reinforcer ____ the likelihood that the preceding behavior will be repeated.
A. increases; increases B. increases; decreases C. decreases; increases D. decreases; decreases
The structure that contains a cell's chromosomes is called the ____
a. endoplasmic reticulum b. nucleus c. mitochondrion d. ribosome
A global study of parental leave showed that generous parental leave policies a. created parents who never returned to work. b. lowered infant mortality rates
c. increased employees' work involvement. d. increased work-based child-care programs.