A pretest may be used in an experiment
a. as a matching variable. c. when change is being investigated.
b. to assess group equivalence. d. All of these are true.
D
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Create a concept map that represents the teaching ideas in this chapter.
What will be an ideal response?
Heritability as a factor in the development of ADHD:
A. Is not supported as a factor in the research literature. B. Appears to be about 70% based on research. C. Is significant, but below 30% based on research. D. Has not been sufficiently studied to draw any conclusions. E. Is the only likely etiology.
Research has not found any differences between the brains of children with autism and the brains of children without autism.
Answer the following statement true (T) or false (F)
A researcher uses a purposive sampling procedure because the participants
a) Are equally likely to be selected b) Have a variety of opinions about the research topic c) Know about the topic being investigated d) Can be conveniently accessed