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´╗┐According to the text, obesity is now prevalent in industrialized countries because

high-positive-incentive value foods are continuously and readily available in these countries.

humans have evolved to eat as much as they can when food is available.

cultures have evolved to promote eating when food is available.

all of the above

both A and B


All of the above



Inconsistent with the set point theory of hunger and eating is
flavor has a major impact on hunger and eating


Sham Eating
The study of shame eating indicates that satiety signals from the gut or blood are not necessary to terminate a meal. In sham-eating experiments, food is chewed and swallowed by the subject; but rather than passing down the subject's esophagus into the stomach, it passes out of the body through and implanted tube.


In one experiment (Weindruch et al., 1986), the caloric intake of mice was reduced by up to 25, 55, or 65%. The benefits of the caloric restriction were greatest in the 65% group These benefits included

an increased life span.
a reduced incidence of cancer.
improved immune responses.
all of the above
none of the above
all of the above



49. According to the text, obesity is now prevalent in industrialized countries because

high-positive-incentive value foods are continuously and readily available in these countries.

humans have evolved to eat as much as they can when food is available.

cultures have evolved to promote eating when food is available.

all of the above

both A and B
all of the above
Loss of 3 or 4 hours of sleep for one night has been found to reliably

disrupt the performance of intelligence tests.
disturb mood.
disrupt motor performance.
reduce strength.
all of the above
disturbs mood
Slow-wave sleep seems to play a particularly important role in the recuperative effects of sleep. The following is major evidence for this conclusion:

People regain only a small portion of their lost sleep...