What is the main difference between morphine and heroin?
a. Morphine is more potent than heroin.
b. Heroin takes much longer to metabolize.
c. Heroin more readily penetrates the blood-brain barrier.
d. Morphine is more lipid-soluble
e. all of the above
c
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During the first year of life, the average baby grows about ______ inches in height and ______ pounds in weight
a. 10; 10 c. 15; 10 b. 10; 15 d. 15; 15
A teacher decides to give her students stickers every time they finish reading a book. After awhile she chooses not to give out any rewards for reading
She notices that the students are not motivated to read as much as before and don't seem to be enjoying their reading time. This best illustrates what phenomenon? a. Intrinsic motivation b. Self-fulfilling prophecy c. Overjustification effect d. Affective forecasting