The phenomenon in which among the population as a whole, IQ scores have been steadily increasing over several decades is known as the ______

According to the article Spaced Out, about the architecture of living spaces, crowding is

(a) the actual number of people living in a space (b) the measurements taken by a census (c) a negative psychological feeling (d) all of the foregoing[a, b, and c] are correct

Most teenage fathers in the U.S.:

A) finish high school. B) work more weeks per year than non-fathers. C) are middle class. D) do poorly in school.