By what age is a child able to use humor and a sense of fairness to gain entry into a group of friends and playmates?
3 years
4 years
6 years
2 years
6 years
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Which of the following is likely to be most effective in reducing prejudice among two groups?
a. ?increased contact of any kind between the groups b. ?increased contact between people of varying socioeconomic standing between the groups c. ?reduced contact between the groups d. ?increased contact between people of similar social standing in the groups
Mifepristone works by ____
a. causing uterine contractions c. blocking progesterone b. halting cell division d. causing uterine bleeding
According to Zajonc's theory concerning social facilitation, a child learning to play
baseball while his or her parents are watching will likely (a) miss the ball more often since this is the dominant response (b) hit well, especially if there are other parents to lend support (c) hit a home run because the parents' support will make the dominant response more likely (d) follow the rules of game theory (e) A and B
Sara has an extra chromosome on her twenty-first pair of chromosomes. What disorder does Sara have?
A. hemophilia B. fragile X syndrome C. sickle-cell anemia D. Down syndrome