A common factor among adolescents who drop out of high school is having
A) authoritarian parents.
B) spent most of their time in only one school.
C) too few books in the house.
D) a small family.
C
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A quasi-experimental research design in which a dependent variable is measured following a treatment in one group and is compared to another preexisting but similar group that does not receive the treatment is called ______.
A. an interrupted time series design B. a one-group pretest-posttest design C. a nonequivalent control group posttest-only design D. a nonequivalent control group pretest-posttest design
Based on twin studies, evidence regarding the influence on IQ scores indicates that:
A. 85% is due to genetics, and 15% is due to the environment B. 85% is due to the environment, and 15% is due to genetics C. 50% is due to genetics, and 50% is due to the environment D. neither genetics nor the environment is predictive of intelligence
Regarding how sleeping and eating affect memory, which of the following statements is/are TRUE?
a. Sleeping after studying increases interference. b. People who are hungry almost always score lower on memory tests. c. Drinking coffee tends to hurt test performance. d. All of these statements are true.
Katherine is a telemarketer who receives $25 for every 20 calls she makes. Katherine is on which schedule of reinforcement?
a. fixed interval b. fixed ratio c. variable ratio d. variable interval