Experimental research design is a scientific method of research that involves the manipulation of one or more variables to test their effect on a dependent variable. The key characteristic of experimental research design is the presence of a controlled environment where subjects or participants are randomly assigned to different groups, typically a control group and an experimental group, and exposed to different levels or conditions of the manipulated variable. The aim of experimental research design is to establish a cause-and-effect relationship between variables, typically through statistical analysis of the data collected. This type of research design is commonly used in natural sciences, social sciences, and psychology to test hypotheses and evaluate the effectiveness of interventions, treatments, or programs.
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