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Related Experiment Video

Updated: Oct 19, 2025

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Reading Comprehension Tests for Children: Test Equating and Specific Age-Interval Reports.

Patrícia Silva Lúcio1, Fausto Coutinho Lourenço2, Hugo Cogo-Moreira3

  • 1Department of Psychology and Psychoanalysis, State University of Londrina, Londrina, Brazil.

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|September 27, 2021
PubMed
Summary

This study successfully equated two reading comprehension test forms for Brazilian children using item response theory (IRT). The results confirm that Form A and Form B can be used interchangeably for accurate assessment.

Keywords:
anchor itemsconcurrent calibrationequatingitem response theoryreading comprehension

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Area of Science:

  • Educational Measurement
  • Psychometrics
  • Item Response Theory (IRT)

Background:

  • Equating is crucial for comparing alternate test forms.
  • Accurate reading comprehension assessment is vital for Brazilian children's education.

Purpose of the Study:

  • To equate two alternative forms (Form A and Form B) of a reading comprehension test for Brazilian children (grades 2-5).
  • To ensure the interchangeable use of both test forms for reliable assessment.

Main Methods:

  • Utilized a non-equivalent random groups design with internal anchor items.
  • Selected 42 items per form (33 unique, 9 common) from 176 items using the 2-parameter logistic (2PL) IRT model.
  • Employed the equateIRT package in R for linking forms and estimated coefficients via Haebara and Stocking-Lord methods.

Main Results:

  • Local independence was confirmed using standardized residual Pearson's bivariate correlation.
  • Scores were equated using both observed score equating (OSE) and true score equating (TSE).
  • The final equated test provided informative results across a wide range of ability levels (theta).

Conclusions:

  • The two alternative reading comprehension test forms are equivalent and can be used interchangeably.
  • The equating process ensures score comparability between Form A and Form B.
  • The study provides a reliable tool for assessing reading comprehension in Brazilian children.