The experience of stress has been found to
a. increase the amount of cocaine self-administered by rats.
b. reduce the high produced by cocaine.
c. render rats resistant to the reinforcing effects of cocaine.
d. block the craving for cocaine in abstinent addicts.
e. inactivate orexin neurons in the lateral hypothalamus.
Answer: a. increase the amount of cocaine self-administered by rats.
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After damage to a set of axons, neurotrophins induce nearby ____
a. injured axons to form new branches b. injured dendrites to form new branches c. uninjured axons to form new branches d. uninjured dendrites to form new branches
Perceptual constancy refers to the ______
a. awareness that objects do not cease to exist when they are out of sight b. fact that the "jnd" is constant over a wide range of stimulus intensities c. tendency to code incoming stimuli always in the same way d. tendency to perceive objects as relatively stable and unchanging, despite changing sensory information
Thinking that does not take into account the viewpoints of others is known as
a. conservation. c. symbolic function. b. transformation. d. egocentrism.
Which of the following statements about the health of emerging adults is most accurate?
a. Most emerging adults experience an increased susceptibility to physical illness due to the increased stressors associated with this developmental period b. Exercise tends to decline from adolescence through emerging adulthood, but overall this is a healthy stage of life. c. Emerging adults are at a high risk of getting cancer and heart disease. d. The immune system is least effective during emerging adulthood.