Five-year-old Linda awakes at night in a state of intense panic and fright. She is not easily comforted by her parents and has no recollection of the experience the next morning. Linda is experiencing nightmares
Indicate whether the statement is true or false
False
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Which statement describes the problem of cohort effects?
A. It's difficult to tell whether differences between groups are due to age-related changes or to the shared experiences of people born during that period of time. B. Groups that are older may have richer life experiences than younger groups, making it difficult to explain group differences. C. One's cohort is constantly changing over time, creating problems for researchers. D. It is time-consuming and costly to study multiple cohorts simultaneously.
At low levels, alcohol's effect on the brain is __________; at higher levels, alcohol's effect is __________.
A. to inhibit glutamate (an excitatory neurotransmitter); to release opiumlike endorphins B. too minimal to have an impact; massive and excitatory C. depressive; excitatory D. to activate the brain's "pleasure centers"; to depress brain functioning
One safeguard against fraud is review by the IRB
a. True b. False Indicate whether the statement is true or false
An estimated 22 percent of U.S. children suffer from
A) marasmus. B) food insecurity. C) kwashiorkor. D) iron deficiency anemia.