In terms of validity, which quality of a study gives us the greatest confidence that the results discovered were due strictly to the relationship between the independent and dependent variables?
a. external
b. construct
c. predictive
d. internal
Answer: D
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Which combination would be a sign of good health?
a. LDL level over 160 mg/dL and HDL level under 50 mg/dL b. LDL level under 160 mg/dL and HDL level under 50 mg/dL c. LDL level under 160 mg/dL and HDL level over 50 mg/dL d. LDL level over 160 mg/dL and HDL level over 50 mg/dL
Nicotinic receptors are sensitive to both nicotine and a. muscarine
b. norepinephrine. c. serotonin. d. ACh.
Your parents have been advised to give your little brother methylphenidate (Ritalin) as treatment for attention deficit hyperactivity disorder (ADHD). What advice would you give them?
A. Don't bother. The drug rarely produces any improvements in behavior. B. Make sure the diagnosis is correct, as Ritalin has no effect on behavior unless you really have ADHD. C. Proceed with caution. Ritalin can improve behavior, but it also produces significant side effects. D. Try giving him a cup of coffee first, and if he reacts well to that, he probably will respond well to Ritalin, too.
Which of the following best captures the characteristics of the age of identity explorations?
a. an understanding of one's multifaceted self, to possess instability in one's occupational field, to understand one's biological heritage, and to reflect on one's life with high integrity b. an understanding of one's gender identity, to possess stability in one's career, to understand one's ethnic heritage and biological beginnings c. an understanding of who one is, what one's capabilities and limitations are, what one's beliefs and values are, and how one fits into the society around them d. an understanding of who others are, what a person's temperament is, how the genetic lineage affects longevity, and to have a shaky global view