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| Krótka forma Alfa Cronbacha× | Analiza rzetelności skróconej wersji skali× | |
|---|---|---|
| Dziedzina | Psychometria | Psychometria |
| Rodzina | Latent structure | Latent structure |
| Rok powstania≠ | 1951 (alpha); short-form practice codified 1980s–2000s | 1990s–2000s |
| Twórca≠ | L. J. Cronbach (alpha); short-form application formalized across scale-abbreviation literature | Conventional practice; codified notably by Smith, McCarthy & Anderson (2000) and Stanton et al. (2002) |
| Typ≠ | Internal consistency reliability coefficient | Scale development / psychometric evaluation |
| Źródło pierwotne≠ | Smith, G. T., McCarthy, D. M. & Anderson, K. G. (2000). On the sins of short-form development. Psychological Assessment, 12(1), 102–111. DOI ↗ | Stanton, J. M., Sinar, E. F., Balzer, W. K. & Smith, P. C. (2002). Issues and strategies for reducing the length of self-report scales. Personnel Psychology, 55(1), 167–194. DOI ↗ |
| Inne nazwy | abbreviated scale alpha, brief scale internal consistency, short-scale Cronbach's alpha, reduced-item alpha | abbreviated scale reliability, short-form validation, scale shortening, item reduction reliability |
| Pokrewne≠ | 4 | 6 |
| Podsumowanie≠ | Short-form Cronbach's alpha quantifies the internal consistency reliability of an abbreviated version of a psychological scale. It applies Cronbach's alpha formula to a reduced item set, verifying that the shortened instrument retains sufficient reliability to support valid score interpretation in research and applied contexts. | Short-form reliability analysis evaluates whether an abbreviated version of a psychological scale maintains acceptable internal consistency, validity, and structural integrity after items are removed. It is used in survey and assessment research to create briefer instruments that reduce respondent burden without sacrificing measurement quality. |
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