As children grow older, their discretionary income usually increases. The best conclusion to draw about the variables age and income are that they are:
a) causally related.
b) uncorrelated.
c) negatively correlated.
d) positively correlated.
ANS: D, As two variables move in the same direction, this indicates a positive correlation between them.
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Teens who are highly motivated and successful generally have parents who are
A) authoritative. B) strict, demanding, and punitive. C) respectful of limits and do not intrude on their lives. D) uninvolved.
According to your textbook, who is MOST correct about influences on intelligence?
a. John, who believes that anyone can be either extremely bright or very unintelligent given the proper environment. b. Sandy, who thinks intelligence is purely a result of the genes one is given. c. Rachel, who believes intelligence is determined by a combination of heredity and the environment. d. Helen, who believes there is no way to determine the influence of heredity and environment on intelligence.