Creative Concept

Concepts in Empirical Investigations
Concepts, as abstract units of meaning, play a key role in the development and testing of theories. For example, a simple relational hypothesis can be viewed as either a conceptual hypothesis (where the abstract concepts form the meaning) or an operationalized hypothesis, which is situated in the real world by rules of interpretation. For example, take the simple hypothesis Education increases Income. The abstract notion of education and income (concepts) could have many meanings. A conceptual hypothesis cannot be tested. They need to be converted into operational hypothesis or the abstract meaning of education must be derived or operationalized to something in the real world that can be measured. Education could be measured by “years of school completed” or “highest degree completed” etc. Income could be measured by “hourly rate of pay” or “yearly salary” etc. The system of concepts or conceptual framework can take on many levels of complexity. When the conceptual framework is very complex and incorporates causality or explanation they are generally referred to as a theory. Noted philosopher of science Carl Gustav Hempel says this more eloquently “An adequate empirical interpretation turns a theoretical system into a testable theory: The hypothesis whose constituent terms have been interpreted become capable of test by reference to observable phenomena. Frequently the interpreted hypothesis will be derivative hypotheses of the theory; but their confirmation or disconfirmation by empirical data will then immediately strengthen or weaken also the primitive hypotheses from which they were derived.”
Hempel provides a useful metaphor that describes the relationship between the conceptual framework and the framework as it is observed and perhaps tested (interpreted framework). “The whole system floats, as it were, above the plane of observation and is anchored to it by rules of interpretation. These might be viewed as strings which are not part of the network but link certain points of the latter with specific places in the plane of observation. By virtue of those interpretative connections, the network can function as a scientific theory”.