Suppose you look at medical records collected on adolescents in high school in 1970 and in high school in 2007
You should expect these records to show that, compared to the number of high school students who smoke cigarettes in 2010, the number who smoked in 1970 would be:
a. considerably higher
b. slightly higher
c. about the same
d. slightly lower
a
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If you were told that the opponent-process theory was preferred over the trichromatic theory to explain color vision, which of the following statements would logically support that statement?
a. the existence of complementary afterimages. b. the greater likelihood of males to have color blindness. c. the fact that the inability to distinguish yellows and blues is less common. d. why some people see no color at all.
By the time a person reaches the age of 6, that person's brain has reached _____ of its full adult size
a. less than 50% b. about 67% c. about 80% d. 95% or more