To ensure internal validity of a pretest-posttest design, you must:
A. include a large sample of subjects.
B. conduct your research in your subjects' natural environment.
C. include control groups that are not exposed to your treatment.
D. All of the answers are correct.
Answer: C
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It is not unreasonable to assume that in ancient times, signs of mental illness were believed to be caused by __________
a) an imbalance of body fluids b) demons c) improper diet d) social forces
The National Research Council reported in 2013 that life expectancy in the U.S. lags behind other high-income countries for four reasons. Which of the following is one of those reasons?
a. poor health behavior like excessive smoking, drinking, and eating b. people below the poverty line demanding access to excessive amounts of healthcare c. web-based medical information programs and social support networks providing misinformation d. high percentage of exercise-related injuries leading to premature death
A proposal was submitted, and ultimately rejected, to add __________ to DSM-5. Among other features, individuals present symptoms such as reckless and uncontrolled sexual behavior
a. sexual behavior disorder b. hypersexual disorder c. hypoactive sexual behavior d. sexual desire disorder
Nerve impulses from the inner ear are converted into sensations of meaningless sounds in the:
A. association areas B. cochlea C. primary auditory cortex D. tympanic membrane