Sally is very physically active and she likes to play with trucks and airplanes and prefers males as playmates. Much of her play behavior is masculine. One explanation for this is that ___________
a. she was exposed to high levels of estrogen in the womb during prenatal development
b. she was exposed to high levels of androgens in the womb during prenatal development
c. she was exposed to high levels of teratogens in the womb during prenatal development
d. she was exposed to high levels of cortisol in the womb during prenatal development
Answer: B
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If the regression between X and Y is less than perfect,
a. predicted values of Y are relatively further from the mean of Y than observed values of X are to the mean of X. b. predicted values of Y are relatively closer to the mean of Y than observed values of X are to the mean of X. c. values of Y cannot be predicted from observations of X. d. observed values of X are relatively closer to the mean of X than predicted values of Y are to the mean of Y.
Kelly is doing research on the effect of birth order on personality. Rather than collecting data on a new set of subjects, she is analyzing hundreds of studies that have already been done on this topic and is going to attempt to come up with an overall estimate of what all these other studies have found. What sort of study is Kelly doing?
a. Experiment b. Meta-analysis c. Correlational d. Longitudinal
According to Vygotsky, which of the following is within a child's zone of proximal development?
A) a task that is too difficult for a child to accomplish alone or with the help of an adult B) a task that a child has recently mastered independently following the assistance of an adult C) a task that is too difficult for a child to do alone but possible with the help of others D) a task that a child figures out how to accomplish through her own independent activity
The primary means by which the immune system defends against invading organisms is to __________.
A. suppress the release of CRH B. release corticosterone C. generate red blood cells from bone marrow D. generate antibodies that bind to and kill a foreign cell