A precise, measurable understanding is achieved when a concept is defined by the procedures used to measure or determine its existence. For instance, “hunger” could be operationally defined as “the number of hours since the last meal” or “a score on a standardized hunger questionnaire.” This contrasts with a dictionary definition, which provides a more general and potentially subjective understanding.
Clarity and consistency in research and communication are greatly enhanced through this practice. Ambiguity is reduced, allowing for replication of studies and comparison of findings across different contexts. Historically, the move towards these specific definitions was driven by a desire for greater scientific rigor and objectivity across disciplines.
