A descriptive variable is a relation between a set of beings to be described and a set of descriptive values with the property that each being is related to exactly one descriptive value.
A descriptive variable can be noted X: Ω -> M(X), where Ω and M(X) denote the set of beings to be described, and the set of possible descriptive values, respectively.
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Stéphane Vautier (May 28, 2012). Variable (descriptive). Nomothetic Psychology. Retrieved July 26, 2026 from https://doi.org/10.58079/scri