Cronbach-alfa: vele vagy nélküle?

نویسندگان

چکیده

Háttér és célkitűzések Tanulmányunkban arra vállalkozunk, hogy egy olyan eljárást mutassunk be, melynek segítségével megalapozottabban használható az eddig is széles körben alkalmazott Cronbach-alfa mutató. Módszer Elemzésünkben olyan, egyszerűen elkészíthető szimulációs eljárás alkalmazását javasoljuk, adatainkhoz igazodva egy, adott helyzetben elvárt együttes konzisztenciaszint (át-lagos korrelációs szint) eléréséhez szükséges viszonyítási pontot adhatunk. Eredmények Elemzésünk ugyanis rámutat arra, nemcsak a kérdőívben használt itemek számától, hanem Likert-skála értékeinek számától függővé kellene tenni mutató pontját. Szintén eredménye elemzésünknek, formulával nem hagyományosan meghatározott 0,7-es értéket kapjuk, mind Likert-skálától, pedig illetve elvárt, közötti kapcsolati erősségtől lehet értéket. Következtetések A javasolt algoritmus mutatónak megvalósítani, mely alkalmas kérdőívünkhöz (a válaszadási Likert-skálához) igazodva, skála itemszáma alapján referenciapontot adhassunk e megbízhatósági mutatóhoz. Background and purpose In our study, we undertake to present procedure that allows more well-founded use of the Cronbach’s alpha index, which has been widely used so far. Method analysis, propose simple simulation procedure, can be in given situation provide reference point achieve expected overall consistency level (average correlation level). Results This because analysis points out index should made dependent not only on number items, but also Likert scale values questionnaire. It result applied formula does give traditionally determined value 0.7, both as well relationship strength between items. Conclusion With help proposed algorithm, an application implemented, suitable add this reliability based questionnaire (the answer scale) items scale.

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ژورنال

عنوان ژورنال: Magyar psychologiai szemle (Nyomtatott)

سال: 2022

ISSN: ['1588-2799', '0025-0279']

DOI: https://doi.org/10.1556/0016.2022.00004