The DSM-5 defines mental disorders according to ________
a. causes of disruptive behavior patterns
b. significant behavior patterns
c. family histories
d. various theoretical approaches
Answer: b
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A study tested drivers for reaction times to road hazards while they were using cell phones, listening to the radio, and listening to a conversation inside the vehicle. These drivers reacted much more slowly to the hazards than did drivers not engaged in these activities. Which statement could apply to the results of the study??
a. ?Driving is automatic, so there is no explanation for increased reaction times. b. ?PDP processing is superior to top-down processing. c. ?The attentional resources of the drivers were exhausted. d. ?Drivers are more vigilant when paying attention to multiple stimuli.
In one study, a saline injection was shown to be 70 percent as effective as morphine in reducing pain. This is an example of
a. a placebo effect. b. physiological blocking. c. the random-assignment effect. d. a double-blind effect.
In the United States, nearly what percentage of all children is cared for by an older sibling rather than a parent during the hours after school?
A) 15 B) 25 C) 35 D) 45
Which statement about school-age children's friendships is true?
A. Trust is the defining feature of friendships in middle childhood. B. School-age children's friendships are less selective than preschoolers' friendships. C. Boys are more exclusive in their friendships than girls. D. As in early childhood, school-age children's friendships are highly unstable.