In Canada, psychiatric researchers are bound to the Medical Research Council of Canada's Guidelines on Research Involving Humans

Which statement would an expert in male puberty make?

A) "In boys, facial hair is the first to develop." B) "Boys who have severe acne have a lower-than-normal testosterone level." C) "Even though boys appear to reach puberty two years after girls, on average spermarche occurs only about 6 months later than menarche." D) "Male physical development during puberty follows the cephalocaudal sequence."

While you are jogging in the park, the scene of a family enjoying a picnic catches your eye. After you turn away, the image of the family will

a. be gone instantly. b. last for about one-half second. c. last for about three seconds. d. last for about five seconds.