The nonequivalent comparison group design can yield several possible outcomes
In one scenario, the experimental group scores higher than the control group at the start of the experiment, and only the experimental group's scores increase from pretesting to posttesting. This could reflect an influence of the independent variable. However, it could also reflect
a. a local instrumentation effect.
b. a attrition effect both groups.
c. simply that the experimental group was studied for a longer time period than the control group.
d. selection-maturation effect.
D
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State and local governments provide all of the following health services EXCEPT ________
A. tax-supported hospital care B. free ambulatory services for all residents C. sewage disposal D. vaccinations and immunizations through local public health departments
Which of the following is true of American interest groups?
A. Interest groups are considered undemocratic. B. Interest groups have become a permanent part of American government. C. Each interest group can only be represented by a single lobbyist throughout its existence. D. All the major interest groups have headquarters in Los Angeles. E. Interest group representatives are seldom consulted when Congress drafts new legislation.