It is estimated that genetics account for about ___ % of the inclination to begin smoking, and for about ___ % of the ability to quit.
A) 10; 15
B) 75; 54
C) 20; 31
D) 54; 75
Correct Answer:
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Q242: An active placebo is a _.
A) drug
Q244: If a placebo effect occurs, a completely
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Q245: Placebo effects are _.
A)psychological but not physical
B)physical
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