The logic of the experimental method rests heavily on the assumption that

a. two variables are positively correlated.
b. experimental and control groups are alike in all important matters except for the independent variable.
c. experimental and control groups are alike in all important matters except for the dependent variable.
d. the independent variable is quantifiable and measurable.


B

Psychology

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Sampling bias is a problem because it

a. limits the generality of the findings. b. makes it impossible to use inferential statistics. c. makes it difficult to avoid a confounding of variables. d. makes the effect of the independent variable appear to be bigger than it really is.

Psychology

Skeels (1966) found that the difference between those children who were functioning well and independent as adults and those who were still in some type of institutional setting as adults was

a. educational opportunity. b. early nutrition. c. individual attention and environmental stimulation. d. exposure to physically stimulating activities.

Psychology

Which factor is the BEST predictor of intelligence?

A) age B) socioeconomic status C) gender D) grade level

Psychology

Deliberately making an environment more stimulating, nutritional, comforting, and loving is referred to as

a. overindulgence. b. permissive love. c. psychological intervention. d. enrichment.

Psychology