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3PL IRT/Evidence
Method evidence record

3PL IRT

The 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.

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Source record

Citations copied verbatim from the method’s source record. No claim-level verification is inferred from them.

Three-Parameter Logistic Item Response Theory Model
Taxonomic method record · latent-structure / psychometrics
  • Birnbaum, 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. · URL
  • Baker, F. B. & Kim, S. H. (2004). Item response theory: Parameter estimation techniques (2nd ed.). Marcel Dekker. · ISBN 978-0824758172
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Curated claims

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Related methods

Generated from the method graph and shown as machine-suggested relations — no evidence claim is inferred.

Same method family2PL IRTmachine-suggested · Relational suggestion, not evidence.Same method familyCFAmachine-suggested · Relational suggestion, not evidence.Same method familyCronbach's Alphamachine-suggested · Relational suggestion, not evidence.Same method familyEFAmachine-suggested · Relational suggestion, not evidence.Same method familyRasch Modelmachine-suggested · Relational suggestion, not evidence.

Evidence status

Sources recorded, not reviewed

Bibliographic sources are present. Claim-level evidence review has not been performed.

Sources

2 recorded citations, copied from the method source record.

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