Dr. Nose conducted an experiment to test changes in sex roles due to spending a entire day reading about the achievements of great women artists and scientists. The experimental group read fifteen articles about great women
The control group read fifteen articles about cooking, automobiles, astronomy, and accounting. During the lunch break, subjects from the experimental and control groups met and talked about what they were reading. What internal validity problem may occur?
A) testing
B) maturation
C) diffusion of treatment
D) experimental mortality
E) none of the above
C
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Indicate whether the statement is true or false
Most of the reforms in the areas of mental health and mental retardation grew out of legal actions
a. True b. False
The term ________ is used to identify the places where one system or subsystem ends and another begins
a. Crossroad b. Confluence c. Boundary d. Transference e. Intersection
A researcher wants to express the middle of a distribution of numbers, such that half the cases are higher and half lower than a value. What statistical measure should he use?
A) mean B) median C) mode D) standard deviation E) correlation