If both samples have the same number of scores (n), then the independent-measures t statistic will have df = 2n - 2

If a mother, standing at the "deep" end of the visual cliff, displays a fearful facial expression for her 12–month-old infant at the "shallow" end of the apparatus, her child most likely will

a. crawl across to see what is scaring her b. stay on the shallow end c. turn around and crawl backwards across the apparatus d. stand up and walk across the cliff in order to reach her more quickly

Which of the following was the English psychologist who

proposed the theory that many personality traits are related to whether one is introverted or extroverted and whether one tends to be emotionally stable or unstable (highly emotional)? a. Julian Rotter b. Hans Eysenck c. Albert Bandura d. Carl Rogers