In a nonequivalent control-group design, if the experimental and control groups differ on the dependent measure at pretest, we must rule out confounding due to
A) regression to the mean.
B) instrumentation.
C) selection.
D) Both A and C
Answer: D
You might also like to view...
More people die from ____ than from war
A) international trade B) natural disasters C) scientific experimentation D) starvation and lack of clean water E) terrorist attacks
A system of government in which power is divided between a central authority and constituent political subunits is called
a. a state system. b. a federal system. c. a dual system. d. a democracy. e. a national system.
What are some examples of preventative health care?
A. aggressive, long-term treatment of diseases and frequent doctor visits B. environmental protection, diet and exercise, and health education C. genetic modification and decentralizing health care to the states D. centralizing medical knowledge to encourage more doctor visits and shifting a focus to treating symptoms of diseases rather than causes
The highest poverty rates in the United States occur among __________
a. African Americans b. Asian Americans and Pacific Islanders c. Hispanic Americans d. Native Americans and Alaskan Natives