השוואת שיטות

	מודל רש המקוצר	ניתוח גורמים מאשרר בגרסה מקוצרת (SF-CFA)
תחום	פסיכומטריה	פסיכומטריה
משפחה	Latent structure	Latent structure
שנת המקור	1960 (Rasch model); short-form application from 1980s onward	1990s–2000s
הוגה השיטה	Georg Rasch	Building on CFA methodology (Jöreskog, 1969) applied to abbreviated scale contexts
סוג	Probabilistic item response model	Confirmatory latent-variable model
מקור מכונן	Rasch, G. (1960). Probabilistic models for some intelligence and attainment tests. Danmarks Paedagogiske Institut.	Byrne, B. M. (2008). Structural Equation Modeling with EQS: Basic Concepts, Applications, and Programming (2nd ed.). Lawrence Erlbaum Associates. ISBN: 978-0805841268
כינויים	Rasch analysis for abbreviated scales, short scale Rasch calibration, brief instrument Rasch model	SF-CFA, abbreviated scale CFA, short-form validation, brief scale factor analysis
קשורות	6	4
תקציר	The short form Rasch model applies Rasch measurement theory to abbreviated instrument versions. Rather than using all items from a full scale, researchers select a reduced item set and calibrate it under the Rasch model to verify that the shortened instrument preserves interval-level measurement, adequate person separation, and item fit, enabling efficient yet rigorous measurement with fewer items.	Short-form confirmatory factor analysis applies CFA to a reduced subset of items drawn from a longer validated scale, testing whether the abbreviated version preserves the original factor structure with acceptable model fit and reliability. It is a standard step in short-form scale development and validation.