In a rehabilitation unit, patients are randomly assigned to high fiber diets versus ordinary fiber diets, in order to measure the effect on constipation. What type of research is this?
a. Descriptive research
b. Correlational research
c. Quasi-experimental research
d. Experimental research
ANS: D
The quantitative research methods are classified into four categories: (1) descriptive, which defines the magnitude of a concept and its characteristics, (2) correlational, which determines association between or among variables, (3) quasi-experimental, which tests an intervention and lacks either a control group or random assignment, and (4) experimental, which tests an intervention and includes both a control group and random assignment. This research study tests an intervention and includes both a control group and random assignment.
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