In examining threats to internal validity history, selection bias and testing are described below. Which of the following is NOT a description of those threats?
a. Events outside the program differentially affect the scores of the experimental or comparison group.
b. Differences in the dropout rate between the experimental group and the comparison group differentially affect effect the scores between the two groups.
c. Members of the experimental and comparison groups are not truly equal on all important factors.
d. The pretest differentially affected the learning of the experimental or comparison group.
Ans: b
You might also like to view...
Which of the following theories is a model of economic and social development that explains global inequality in terms of technological and cultural differences between societies?
a. social-conflict theory b. modernization theory c. world-system theory d. cultural-transmission theory
Virginia passed a 1705 law denying rights to which of the following groups?
a. negroes b. mulattoes c. women d. American Indians e. A, B, & D f. A, B, C, & D
_______ involves the transplantation of a healthy gene to replace a defective or missing gene
a. Gene therapy b. Genetic healing c. Technological healing d. DNA replacement
According to research by Kingsley Davis, prostitution is tolerated for all of the following reasons EXCEPT:
a. it helps control the sexual behavior of men b. it provides alternatives for men who are not sexually fulfilled in their marriages c. it provides a job for women who need a means of earning a living wage d. it provides sexual activity with multiple women for men