During which of the following time periods of life are boys and girls most likely to be the slimmest?

Your teacher organizes a debate on Freudian theory. You are assigned to be on the anti-Freud side and, therefore, must point out problems in the theory. Which of the following will be at the top of your list?

a) Children do not have sexual motives. b) Several of his concepts have no supporting scientific data. c) Defense mechanisms actually increase anxiety. d) Psychoanalytic therapy is effective for treating psychotics only.

Which of the following statements about sex differences in spatial abilities is true?

A) Experience contributes to females' superior spatial performance. B) Sex differences in spatial abilities emerge as early as the first few months of life. C) One explanation is that heredity enhances left-hemispheric functioning. D) Girls spend far more time than boys in play involving manipulative activities.