In which of the following regions of the world is the rate of HIV/AIDS infection currently the highest?
a. China and Southeast Asia
b. South America
c. the United States
d. Sub-Saharan Africa
d
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Darley and Gross (1983) conducted a study in which they asked participants to evaluate the intellectual ability of a nine-year-old named "Hannah.". Some participants were led to believe that she came from a high socioeconomic (SES) background? others were led to believe she came from a low SES background. Which statement about this study is accurate? a. Only for perceivers who actually met
the target (i.e., Hannah) in person did expectation influence perceptions. b. Perceivers' expectations determined the way they behaved toward the target, which in turn influenced thetarget's behavior. c. Perceivers' expectations led them to fail to notice clear limitations of the target's actual performance. d. Perceivers' expectations affected their perceptions of the target's performance, even when that performancewas identical across conditions.
One positive consequence of the loss of a loved may be the for the survivor
a. decline in the quality of relationships with significant others b. feelings of alienation c. growth in commitment to those in one's radius of significant relationships d. reaction formation
Removing an aversive event following a behavior, which will increase the future likelihood of the behavior, is known as
a. cognitive reinforcement. b. behavioral reinforcement. c. positive reinforcement. d. negative reinforcement.
The degrees of freedom determine the ______ the t distribution.
A. mean of B. variance of C. shape of D. range of