NTA-NET (UGC-NET) Paper-I (in English) Research Methods-Experimental Design Study Material (Page 1 of 1)

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Experimental Design: Principles of Experimental Design, Types of Experimental Designs

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Principles of Experimental Design

Ronald A. Fisher proposed methodology for designing experiments in his book, “The Design of Experiments” in 1935. He described several principles for designing good experiments:

  • Comparison: When it is hard to exactly reproduce measured results, comparison is used. Comparisons are preferred and more reproducible. Comparison of outcome (dependent variable) is done based on control groups. There should be at least two groups, one of them has been exposed to treatment, and the other has not been.
  • Randomization: Several aspects of experiments like sampling an…

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Experimental Design: Blind Experiment, Pre-Experimental Design, Quasi-Experimental Design, True Experimental Design

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Blind Experiment

To prevent bias effects in an experiment following techniques are used.

Double-Blind Experiment

If critical aspects of experiment is not known by participants or experimenter, it is double-blind experiment. It protects from experimen…

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