Experimental Research

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Definition: Experimental Research

It can be understood as a collection of research designs to understand different causal processes through manipulation and controlled testing. During its course, the researcher tries to maintain control over all factors that may affect the result of an experiment. This way, the researcher attempts to determine or predict what may occur.

The essentials of an Experimental Research are

  • Manipulation of an independent variable.
  • All other variables except the dependent variable are controlled
  • Effect on the dependent variable is observed by manipulating the independent variable

There are three methods of Experimental Control

  • Physical Control
  • Selective Control
  • Statistical Control

There are two types validity of Experimental Design

  • Internal Validity
  • External Validity


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