The number of boys who __________ exceeds the number of girls by a ratio of over 4 to 1
A) experience serious depression
B) kill themselves
C) make unsuccessful suicide attempts
D) overdose on sleeping pills
Answer: B
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Which of the following is an example of a somatic symptom of depression?
a. suicidal thoughts b. sleeping problems c. feelings of low self-worth d. pessimistic thoughts about the future
Suppose you read in a popular magazine that college males and college females were asked to rate themselves in terms of how much they help their friends who have problems. The average score for the females was higher than the average score for the males. What would you conclude?
a. Females are more helpful than males, at least in helping their friends. b. Other people think that females are more helpful than males. c. Researcher expectancy was undoubtedly responsible for the gender difference. d. Females report that they help their friends to a greater extent than males report that they help their friends; however, males and females may not differ in their actual helpful behaviors.
A set of 10 scores has SS = 90 . If the scores are a sample, the sample variance is ____, and if the scores are a population, the population variance is ____
a. s2 = 9; ?2 = 9 c. s2 = 10; ?2 = 9 b. s2 = 9; ?2 = 10 d. s2 = 10; ?2 = 10
The presence of uncontrolled variables in a quasi experiment
a. Reduces the internal validity of the experiment b. Renders the experiment invalid c. Eliminates the reliability of the experiment d. Make interpretation impossible