Operationalism Operationalism asserts that the criterion of truth of a proposition is that it is able to be 'tested' by an effective procedure, or finite sequence of definite operations. Thus, operationalism rejects as invalid any concept which is not amenable to testing in this manner, and identifies a concept with its operational definition, rejecting any other content for it. Operationalism thus draws attention to the practical aspect of knowledge, but true Notions , such as 'social class' or 'value' are barred from theory by Operationalism, which will admit only of those objects immediately given in experience.
Operationalism thus remains within the orbit of subjectivism applied one-sidedly.