Operational definition measurement focus – UGC NET Question

An operational definition explains exactly how a researcher will observe, measure or manipulate a concept in a given study. It converts an abstract idea into specific procedures, instruments and scoring rules. This makes the variable measurable and allows other researchers to replicate the study. Therefore, a definition that specifies how a concept will be measured or observed is correctly termed an operational definition.

Option A:
A theoretical definition describes a concept in abstract, conceptual terms and often appears in the framework section, but it does not spell out concrete measurement procedures. It is useful for understanding meaning but not sufficient for empirical observation. Hence, it does not match the focus on “how it will be measured” in the stem.

Option B:
A dictionary definition provides a general language meaning of a term for ordinary use, not a research-specific plan for observation or measurement. While it clarifies everyday usage, it does not tell the researcher what to do in practice. Thus, it is not appropriate here.

Option C:
An operational definition details the indicators, tools and steps used to capture a concept, such as defining academic achievement by test scores on a particular exam. It links the construct to observable behaviour and is central to empirical research. These features align exactly with the stem, so this option is correct.

Option D:
A nominal definition usually gives a name or brief description without necessarily including detailed measurement procedures. It may help in classification but does not fully address how observation will occur in the specific study. Therefore, it does not fit the description given.