Chapter 13 discussed research conducted in China on infants' ability to recognize their mother's voice one or two weeks before the infants were born. In one condition, infants heard their mother's voice reading a poem
This research was appropriately conducted because, in the second condition, infants heard
a. their mother reading the same poem at a different time.
b. their mother reading a different poem.
c. another mother reading a different poem.
d. another mother reading the same poem.
Ans: d
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An important principle of natural childbirth is that
a. learning about pregnancy and childbirth will reduce fear. b. with proper coaching, pain can be almost completely eliminated. c. women should learn to coach themselves in order to produce the best possible birth experience. d. relaxation techniques and muscle-strengthening exercises can eliminate the need for medication.
When Fred's mother was pregnant with him, she lived in an area with very high levels of air pollution. Based on research, Fred will be at increased risk for which of the following at age five?
a. lung cancer b. heart disease c. impaired cognitive development d. asthma
Which factor increases the probability of automatic activation of stereotypes?
a. exposure to neutral information about a group or target b. a personal motivation to avoid prejudice c. a low prevalence of the stereotype in the culture d. subliminal exposure to prejudicial messages
Suppose that we take 15 gay couples and observe the difference within couples in terms of age. Then we take 15 straight couples are record the same differences. We want to test if straight couples are more similar in age than gay couples. (There is some reason to expect that this is true.) What statistical procedure would be most appropriate?
a. computing a correlation coefficient for each couple b. running an independent samples t test between gays and straights c. running a t test for related samples d. using a chi-square test