Which term provides a specific explanation of an abstract concept allowing for measurement?

The selected answer is accurate because an operational definition is a precise statement that defines a concept in measurable terms. It specifies the exact procedures or criteria used to quantify or evaluate an abstract idea, making it possible for researchers to test hypotheses and analyze data effectively. For example, if the concept in question is "intelligence," an operational definition might describe how intelligence will be measured, such as through standardized test scores.

In contrast, a theoretical framework provides a broader context by organizing concepts and theories to inform research but does not offer specific measurement guidelines. A conceptual model presents a visual representation of relationships among variables, helping to understand complex ideas, yet it does not delineate the operational specifics necessary for measurement. Lastly, a research hypothesis is a testable statement predicting the relationship between variables but does not itself specify how those variables will be measured. Thus, the operational definition is crucial for ensuring clarity and consistency in research practices.