Participant characteristics that vary systematically across conditions in an experimental research are potential ___________ to the findings of the study if they are unknown to the researcher.
a. control variables
b. quasi-independent variables
c. confound variables
d. dependent variables
Answer: c. confound variables
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An alcoholic visits a chemical dependency professional outside of his managed care network. He must pay more, but the insurance company will pay a portion. This is an example of ________
A. an HMO B. a PPO C. a POS D. Medicaid
The development of the social welfare system in the United States
A) began at the federal level B) was patterned after religious thought and philosophy C) evolved in opposition to england's social welfare system D) was based in large part on England's social welfare system
Research on group size found that groups of _____ people were considered most satisfactory by the members
a. Three b. Five c. Seven d. Ten
Adolescent brain development
a. is limited because the myelin sheath is still developing. b. is equal to a young adult's brain development. c. shows advanced functioning related to emotions and problem solving. d. is really complete because the brain's gray matter expands.