Person fit assessment using the PerFit package in R

Amin Mousavi; Jorge N. Tendeiro; Jalil Younesi

doi:10.20982/tqmp.12.3.p232

Person fit assessment using the PerFit package in R

Amin Mousavi^*
, Jorge N. Tendeiro
, Jalil Younesi

^*Corresponding author for this work

Psychometrics and Statistics

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

The validity of scores derived from an educational or psychological testing situation determines the accuracy and appropriateness of inferences made about an examinee based on his/her test score. Person fit assessment provides a framework for assessing the conformity of a test score to a given measurement model or to a group of examinees as an indicator of validity/invalidity of the test score. This paper presents a brief overview of person fit assessment, the effect of person misfit on ability estimation, the PerFit R package as a powerful tool for person fit assessment, and two practical examples on how to use PerFit for person fit assessment.

Original language	English
Pages (from-to)	232-242
Number of pages	11
Journal	The Quantitative Methods for Psychology
Volume	12
Issue number	3
DOIs	https://doi.org/10.20982/tqmp.12.3.p232
Publication status	Published - 2016

Keywords

Person fit
Item response theory
Aberrant responding
Test validity

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Person fit assessment using the PerFit package in RFinal publisher's version, 561 KBLicence: CC BY

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AB - The validity of scores derived from an educational or psychological testing situation determines the accuracy and appropriateness of inferences made about an examinee based on his/her test score. Person fit assessment provides a framework for assessing the conformity of a test score to a given measurement model or to a group of examinees as an indicator of validity/invalidity of the test score. This paper presents a brief overview of person fit assessment, the effect of person misfit on ability estimation, the PerFit R package as a powerful tool for person fit assessment, and two practical examples on how to use PerFit for person fit assessment.

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Person fit assessment using the PerFit package in R

Abstract

Keywords

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