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Operationalization is the scientific practice of operational definition, where even the most basic concepts are defined through the operations by which we measure them. The practice originated in the field of physics with the philosophy of science book The Logic of Modern Physics (1927), by Percy Williams Bridgman, whose methodological position is called "operationalism".
The creation of constructs is a part of operationalization, especially the creation of theoretical definitions. The usefulness of one conceptualization over another depends largely on construct validity.
An operational definition is designed to model or represent a concept or theoretical definition, also known as a construct. Scientists should describe the operations (procedures, actions, or processes) that define the concept with enough specificity such that other investigators can replicate their research. [4] [5]
In psychometrics, criterion validity, or criterion-related validity, is the extent to which an operationalization of a construct, such as a test, relates to, or predicts, a theoretically related behaviour or outcome — the criterion.
Construct validity refers to the extent to which operationalizations of a construct (e.g., practical tests developed from a theory) measure a construct as defined by a theory. It subsumes all other types of validity. For example, the extent to which a test measures intelligence is a question of construct validity.
One or more theoretical propositions, specifying linkages between constructs, for example: "As age increases, memory loss increases". Correspondence rules, allowing each construct to be measured empirically. Such a rule is said to "operationalize" the construct, as for example in the operationalization: "Age" is measured by asking "how old are ...
Lucy Popova's 'The Extended Parallel Process Model: Illuminating the Gaps in Research', is an extensive review on the theoretical and empirical applications of the EPPM. [11] Popova discovered that the strong theoretical foundations has some inconsistencies in a few of its operational definitions. A systematic review of existing literature on ...
Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict natural phenomena. This is in contrast to experimental physics , which uses experimental tools to probe these phenomena.