Effects of specific drugs are difficult to assess when polydrug abuse occurs because:
a. drugs can cancel each other’s effects
b. drugs can increase the effect of other drugs
c. polydrug users differ from those using few or no drugs
d. all of the above
Ans: D
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The lifetime prevalence of alcoholism among families of alcoholics is higher than in the general population, by a factor of about
a. 2. b. 3 to 5. c. 10 to15. d. 20.
Mickey regularly practices ________ during a set period of time each day. If he were to undergo neurological research, there would probably be evidence that the attention systems in his brain are more organized
a. a musical instrument b. the martial arts c. meditation d. tai chi
Name Selman's five stages in children's changing concepts of friendship.
What will be an ideal response?
What is the purpose for using habituation in an observational research study? a. It helps ensure the objectivity of the measurements
b. It helps ensure the reliability of the measurements. c. It provides an operational definition for the variables being measured. d. It helps ensure that the people being observed are not influenced by the presence of an observer.