The Intellectual Justice Scale: Measuring How Fairly People Engage With Knowledge
Abstract
Intellectual justice, the disposition to engage fairly with knowledge and those who produce it, has received growing attention in philosophy and education, yet no validated self-report measure exists. We developed and validated the Intellectual Justice Scale (IJS), a 9-item measure with three factors (Testimonial Justice, Hermeneutical Justice, and Intellectual Action) grounded in Fricker’s framework of intellectual injustice. An initial item pool was refined through expert review and pilot testing. In Study 1 (N = 404), exploratory factor analysis supported a three-factor structure, with independent statistical and conceptual item selection converging on the same nine items. In Study 2 (N = 401), confirmatory factor analysis supported good model fit, and the IJS showed expected associations with intellectual humility, personality traits, and social justice attitudes while remaining empirically distinguishable from each. These findings offer the first validated self-report measure of intellectual justice attitudes, providing researchers with a tool to study individual differences.
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BibTeX
@misc{daamen2026intellectual,
title = {{The Intellectual Justice Scale: Measuring How Fairly People Engage With Knowledge}},
author = {Yara Daamen and Vlasta Sikimić and Daniel Lakens},
howpublished = {PsyArXiv},
year = {2026},
month = sep,
doi = {10.31234/osf.io/buhyd_v3},
url = {https://osf.io/preprints/psyarxiv/buhyd_v3/},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - The Intellectual Justice Scale: Measuring How Fairly People Engage With Knowledge
AU - Yara Daamen
AU - Vlasta Sikimić
AU - Daniel Lakens
PY - 2026
DA - 2026/09/02
PB - PsyArXiv
DO - 10.31234/osf.io/buhyd_v3
UR - https://osf.io/preprints/psyarxiv/buhyd_v3/
AB - Intellectual justice, the disposition to engage fairly with knowledge and those who produce it, has received growing attention in philosophy and education, yet no validated self-report measure exists. We developed and validated the Intellectual Justice Scale (IJS), a 9-item measure with three factors (Testimonial Justice, Hermeneutical Justice, and Intellectual Action) grounded in Fricker’s framework of intellectual injustice. An initial item pool was refined through expert review and pilot testing. In Study 1 (N = 404), exploratory factor analysis supported a three-factor structure, with independent statistical and conceptual item selection converging on the same nine items. In Study 2 (N = 401), confirmatory factor analysis supported good model fit, and the IJS showed expected associations with intellectual humility, personality traits, and social justice attitudes while remaining empirically distinguishable from each. These findings offer the first validated self-report measure of intellectual justice attitudes, providing researchers with a tool to study individual differences.
ER -