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July 26, 2026Journal of Psychopathology and Behavioral AssessmentOpen Access

Development and Psychometric Evaluation of the Adolescent and Young Adults Trait-State Irritability Reactivity and Regulation Inventory (IRRIT-IJ)

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Authors

RORebeca Gomes de OliveiraMBMakilim Nunes BaptistaCFCaroline de Fátima Francisco

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Overview

Randomized trial evaluates the IRRIT-IJ inventory for measuring irritability in adolescents and young adults, indicating its psychometric strengths.

Key Points

  • The study aims to develop and evaluate the psychometric properties of the IRRIT-IJ inventory measuring trait and state irritability.
  • Included 286 Brazilian participants aged 11 to 24 years
  • Developed items via literature review and expert evaluation
  • Examined internal structure using confirmatory model evaluation and validity with external measures
  • Expert evaluation indicated high agreement (Gwet’s AC1 = 0.87)
  • Final inventory includes 26 items with strong internal consistency for both State (α = 0.892) and Trait (α = 0.891)
  • Scores positively associated with irritability and psychological distress, with females showing higher scores than males.

Cite This Study

Oliveira et al. (2026) studied this question.

synapsesocial.com/papers/6a65a9f3d3aea3239cd794bchttps://doi.org/10.1007/s10862-026-10307-2
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