According to national random surveys (Valenzuela et al., 2009), how many teenagers and young adults (18- to 29- year-olds) use social networking sites?
a. 1 out of 10
b. 1 out of 20
c. 2 out of 5
d. 2 out of 3
d
You might also like to view...
What kind of evidence supports the recommendation against spanking children? a. Spanking frequency is positively correlated with children's misbehavior
b. Spanking frequency is negatively correlated with children's misbehavior. c. Experiments with random assignment show psychological harm from spankings. d. Experiments with random assignment show health problems from spankings.
Joe, Meagan, Allison, and Timothy are classmates who must complete a major course assignment, as a group, by April 15th. During the first meeting, held on February 15th, they make plans for completing the project. Studies of the planning fallacy suggest they will
a. waste too much time planning out who will do what and when. b. underestimate the amount of time the group will need to complete its work. c. overestimate the amount of time the group will need to complete its work. d. spend much of their time thinking about problems that might slow their progress. e. make more accurate time estimates as a group than each one would if making plans individually.
A test for adults that provides separate measures of verbal and performance (or nonverbal) skills, as well as a total score is the
a. Stanford-Binet Intelligence Scale (SB%). b. Wechsler Intelligence Scale for Children-IV (WISC-IV). c. Kaufman Assessment Battery for Children (KABC-II). d. Wechsler Adult Intelligence Scale (WAIS-III).
How might a security guard who looks at X-rays in order to decide whether packages should be searched be likely to change their criterion for signal detection if they wanted to find as many threats as possible?
A. They would be more likely to search packages, to reduce the number of misses. B. They would be more likely to search packages, to reduce the number of false alarms. C. They would be less likely to search packages, to reduce the number of false alarms. D. They would be less likely to search packages, to increase the number of hits.