There’s no conclusive evidence that even Rensis Likert, the social psychologist who developed his namesake scale in 1932, did any kind of testing before using it in his doctoral dissertation. “The ...

Marketing researchers have available for their use in measuring attitudes or components of attitudes a number of different types of scales or scale formats, including the semantic differential, Stapel ...

Researchers often tweak the number of response options in the traditional five-point Likert Scale with little empirical justification for doing so. Now a psychologist has tested the test.