Likert scale is commonly used in social and behavioral sciences. The matter is whethere there is a condition that a single item in the measurement could be used for analysis and provide meaningful data.
Single-item measures provide a number of advantages, including ease of data collection and simplicity. When the operationalized variable has a clear interpretation, single-item measures are generally preferred (it is narrow in scope, unambiguous, and unidimensional). These criteria are met by a number of qualities: For example, ‘age' can be expressed as the number of years from birth (for individuals) or as the number of years since the establishment (for businesses) (firms). Single-item scales, on the other hand, have been criticized for oversimplifying complex phenomena (particularly in the psychology literature).
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