The adolescent growth spurt
a. usually begins earlier for girls than for boys.
b. usually ends earlier for boys than for girls.
c. is a time when girls gain more muscle than boys.
d. is a time when boys gain more fat than girls.
a
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How might a psychoneuroimmunology's explain the increased risk of catching the common cold during periods of prolonged stress?
a. Stress increases the number of natural killer cells, which attack the immune system. b. Stress increases the number of white blood cells, making the body more susceptible to infection. c. Telomeres are lengthened by stress, leaving cells more vulnerable to infection. d. Stress disrupts normal chemical communication between the brain and the immune system.
Modern attempts to classify psychological disorders date back to ____________
a. Sigmund Freud b. Aristotle c. Emil Kraepelin d. the humanistic movement