When in high-risk environments, it helps to have:
a. exposure to positive environments as well.
b. external personalities.
c. money.
d. disengaged parents.
Ans: a
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Antidepressant drugs have been designed to increase levels of serotonin and ______
a. amitriptyline c. dopamine b. norepinephrine d. cortisol
The all-or-none principle states that:
A. only specific neurotransmitters will exert effects on some brain regions. B. if a neuron is not used for a certain period of time, it will disintegrate. C. an individual has a dense concentration of mirror neurons or none at all. D. once the threshold has been crossed, an action potential either fires or it does not.
The aims of ethical standards in behavioral research are to ______.
A. ensure that only studies with absolutely no risk to participants are conducted B. protect the researcher from liability for their part in a research study C. ensure that all human participants are informed and protected from harm D. make sure that ethical behavior is the sole responsibility of ethics committees
Estimating the value of the population mean on the basis of the sample mean alone produces a(n)
a. parameter b. point estimate of a parameter c. estimated statistic d. none of these, since the population mean cannot be estimated