ArticlePsychometrika2015
On the Unidentifiability of the Fixed-Effects 3PL Model.
Article in Psychometrika, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 16 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
16 citing papers in PubMed.
- Joint modeling with generalized item response theory model family and response time model: Enhancing model structural flexibility and data-fitting adequacy.Behavior research methods · 2025Article
- Fused SDT/IRT Models for Mixed-Format Exams.Educational and psychological measurement · 2024Article
- On the Identifiability of 3- and 4-Parameter Item Response Theory Models From the Perspective of Knowledge Space Theory.Psychometrika · 2024Article
- Maximization of Some Types of Information for Unidentified Item Response Models with Guessing Parameters.Psychometrika · 2021Article
- Bayesian Modal Estimation for the One-Parameter Logistic Ability-Based Guessing (1PL-AG) Model.Applied psychological measurement · 2021Article
- A Restricted Four-Parameter IRT Model: The Dyad Four-Parameter Normal Ogive (Dyad-4PNO) Model.Psychometrika · 2020Article
- An Item Response Model for True-False Exams Based on Signal Detection Theory.Applied psychological measurement · 2020Article
- A Two-Parameter Logistic Extension Model:Applied psychological measurement · 2019Article
- The Use of an Identifiability-Based Strategy for the Interpretation of Parameters in the 1PL-G and Rasch Models.Psychometrika · 2019Article
- Higher-Order Asymptotics and Its Application to Testing the Equality of the Examinee Ability Over Two Sets of Items.Psychometrika · 2019Article
- Article
- Expectation-Maximization-Maximization: A Feasible MLE Algorithm for the Three-Parameter Logistic Model Based on a Mixture Modeling Reformulation.Frontiers in psychology · 2017Article
- A Note on the Identifiability of Fixed-Effect 3PL Models.Psychometrika · 2016Article
- Revisiting the 4-Parameter Item Response Model: Bayesian Estimation and Application.Psychometrika · 2016Article
- The Impact of Non-attempted and Dually-Attempted Items on Person Abilities Using Item Response Theory.Frontiers in psychology · 2016Article
- A Statistical Test for Differential Item Pair Functioning.Psychometrika · 2015Article
Corrections and comments
- Commented on by
- Erratum issued
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The paper offers a general review of the basic concepts of both statistical model and parameter identification, and revisits the conceptual relationships between parameter identification and both parameter interpretability and properties of parameter estimates. All these issues are then exemplified for the 1PL, 2PL, and 1PL-G fixed-effects models. For the 3PL model, however, we provide a theorem proving that the item parameters are not identified, do not have an empirical interpretation and that it is not possible to obtain consistent and unbiased estimates of them.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.