Examlex
Which of the following factors contributed most to the transition of poor yet vibrant African American communities of the 1940s into the abandoned,violent ghettos of the 1980s?
Correlational Studies
Studies designed to yield information concerning the degree of relationship between two variables.
Ex Post Facto Design
A scientific study in which the values of the independent variable are not manipulated, but selected by the experimenter after the groups have naturally divided themselves.
Descriptive Research
A method of research that aims to observe and describe characteristics of a subject without influencing it.
Placebo
A substance or treatment with no therapeutic effect, used as a control in testing the efficacy of another substance or treatment.
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