Standard Article

Operational Definition

  1. Melvin H. Marx

Published Online: 30 JAN 2010

DOI: 10.1002/9780470479216.corpsy0624

Corsini Encyclopedia of Psychology

Corsini Encyclopedia of Psychology

How to Cite

Marx, M. H. 2010. Operational Definition. Corsini Encyclopedia of Psychology. 1.

Author Information

  1. N. Hutchinson Island, FL

Publication History

  1. Published Online: 30 JAN 2010


Few topics in the area of scientific communication have been as troublesome as that of operational definition. Psychologists have done their share both to clarify and to muddy the waters regarding this problem, and the following outlines some of the principal facets to be considered.


  • empiricism;
  • logical positivism;
  • operational definition;
  • research design