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	Q-Methodology	Tecnica del Repertorio di Costrutti
Campo	Psicologia	Psicologia
Famiglia	Hypothesis test	Hypothesis test
Anno di origine	1935	1955
Ideatore	William Stephenson	George Kelly
Tipo	Q-sort ranking technique	Qualitative-quantitative hybrid
Fonte seminale	Stephenson, W. (1935). Technique of factor analysis. Nature, 136(3434), 297.	Kelly, G. A. (1955). The psychology of personal constructs. Norton.
Alias	Q-Sort, Q-Technique	Rep Grid, Repertory Grid Test, Kelly Grid
Correlati	3	1
Sintesi	Q-Methodology is a mixed-methods approach that combines quantitative factor analysis with qualitative interpretation to identify distinct perspectives, viewpoints, or 'factors' shared by groups of people. Introduced by William Stephenson in 1935, it uses Q-sorts—where participants rank statements on a continuum—to measure subjective viewpoints systematically. The method applies factor analysis to correlations among Q-sorts (not items), revealing common patterns of opinion or attitude that transcend individual differences.	The Repertory Grid is a qualitative-quantitative method derived from Personal Construct Theory that elicits how individuals construe (interpret and evaluate) a domain of interest—people, concepts, events, or objects—through their own idiosyncratic dimensions or 'constructs.' Introduced by George Kelly in 1955, the method generates a grid of elements (e.g., people) rated along personally meaningful bipolar constructs, revealing cognitive structures, values, and reasoning patterns without imposing researcher-defined categories.