An educational researcher randomly assigns 20 health classes to either receive a violence prevention curriculum for 5 weeks or to receive the usual health curriculum during the five weeks. What type of random assignment is this?
A. simple random assignment
B. stratified random assignment
C. matched random assignment
D. cluster random assignment
Ans: D
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How might a 4-year-old evaluate her self-esteem?
a. She doesn't; she is too young to think of herself in this way. b. according to cognitive competence, physical competence, and social acceptance c. mostly in terms of personality traits d. none of these
Todd's identical twin brother is schizophrenic. The odds are one out of ______ that he, too, will be schizophrenic
a. two c. six b. four d. eight
The use of methods that teach children appropriate behavior is referred to as
A) punishment. B) psychological control. C) emotional control. D) discipline.
Biological research finds that:
a. homosexual behavior is found in hundreds of animal species. b. male and female sexual responses are physiologically very different. c. women have a stronger sex drive than men do, contrary to the stereotype.