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3모수 로지스틱 문항반응이론 모형 (3PL)×크론바흐 알파 (신뢰도 분석)×
분야심리측정학통계학
계열Latent structureLatent structure
기원 연도19681951
창시자Allan BirnbaumLee J. Cronbach
유형Item response model / latent trait modelReliability / internal consistency coefficient
원전Birnbaum, A. (1968). Some latent trait models and their use in inferring an examinee's ability. In F. M. Lord & M. R. Novick (Eds.), Statistical theories of mental test scores (pp. 397–479). Addison-Wesley. link ↗Cronbach, L. J. (1951). Coefficient alpha and the internal structure of tests. Psychometrika, 16(3), 297–334. DOI ↗
별칭3PL IRT — Üç Parametreli Madde Tepki Modeli, three-parameter logistic model, 3PLM, Birnbaum modelcoefficient alpha, alpha reliability, internal consistency reliability, Güvenilirlik Analizi (Cronbach Alpha)
관련54
요약The three-parameter logistic (3PL) model, introduced by Allan Birnbaum in 1968, is an item response theory model that describes the probability of a correct response to a binary test item as a function of three item-level parameters — difficulty, discrimination, and a lower asymptote representing guessing — and one person-level parameter representing latent ability.Cronbach's alpha is a coefficient of internal consistency that quantifies the degree to which a set of items on a scale measures the same underlying construct. Introduced by Lee J. Cronbach in 1951, it remains the most widely reported reliability index in social-science, health, and educational research.
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ScholarGate방법 비교: 3PL IRT · Cronbach's Alpha. 2026-06-18에 다음에서 검색함: https://scholargate.app/ko/compare