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J. Intell.
Volume 13
Issue 12
10.3390/jintelligence13120154
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Article

Validation of International Cognitive Ability Resource (ICAR) Implemented in Mobile Toolbox (MTB)

by
Stephanie Ruth Young
1,*,
Jiwon Kim
1,
Kiley McKee
2,
Danielle Rothschild Doyle
2,
Miriam A. Novack
1,
William Revelle
2,
Richard Gershon
1 and
Elizabeth M. Dworak
1
1
Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
2
Department of Psychology, Northwestern University Weinberg College of Arts and Sciences, Evanston, IL 60208, USA
*
Author to whom correspondence should be addressed.
J. Intell. 2025, 13(12), 154; https://doi.org/10.3390/jintelligence13120154
Submission received: 26 August 2025 / Revised: 6 November 2025 / Accepted: 20 November 2025 / Published: 1 December 2025
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Abstract

Standardized cognitive assessments are essential in research but often limited by proprietary restrictions and methodological constraints. This study evaluates the psychometric properties of two public-domain International Cognitive Ability Resource (ICAR) measures implemented in the Mobile Toolbox (MTB) assessment library: Puzzle Completion and Block Rotation. Using a sample of 100 adults (18–82 years), we assessed internal consistency, test–retest reliability, and construct validity compared to gold-standard measures. Results demonstrated acceptable reliability for both Puzzle Completion and Block Rotation. Each measure showed moderate to strong correlations with respective gold-standard assessments: Puzzle Completion correlated with Raven’s Progressive Matrices (r = 0.40), and Block Rotation with Mental Rotation Test (r = 0.46). Practice effects were non-significant. Both demonstrated the ability to discriminate between verbal and nonverbal abilities. Findings were consistent with previous ICAR validations, suggesting MTB provides a viable option for remote self-administration while preserving measurement integrity. This enables larger sample collection and ecological assessment of cognitive abilities outside of laboratory settings.
Keywords: International Cognitive Ability Resources (ICAR); Mobile Toolbox (MTB) International Cognitive Ability Resources (ICAR); Mobile Toolbox (MTB)

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MDPI and ACS Style

Young, S.R.; Kim, J.; McKee, K.; Doyle, D.R.; Novack, M.A.; Revelle, W.; Gershon, R.; Dworak, E.M. Validation of International Cognitive Ability Resource (ICAR) Implemented in Mobile Toolbox (MTB). J. Intell. 2025, 13, 154. https://doi.org/10.3390/jintelligence13120154

AMA Style

Young SR, Kim J, McKee K, Doyle DR, Novack MA, Revelle W, Gershon R, Dworak EM. Validation of International Cognitive Ability Resource (ICAR) Implemented in Mobile Toolbox (MTB). Journal of Intelligence. 2025; 13(12):154. https://doi.org/10.3390/jintelligence13120154

Chicago/Turabian Style

Young, Stephanie Ruth, Jiwon Kim, Kiley McKee, Danielle Rothschild Doyle, Miriam A. Novack, William Revelle, Richard Gershon, and Elizabeth M. Dworak. 2025. "Validation of International Cognitive Ability Resource (ICAR) Implemented in Mobile Toolbox (MTB)" Journal of Intelligence 13, no. 12: 154. https://doi.org/10.3390/jintelligence13120154

APA Style

Young, S. R., Kim, J., McKee, K., Doyle, D. R., Novack, M. A., Revelle, W., Gershon, R., & Dworak, E. M. (2025). Validation of International Cognitive Ability Resource (ICAR) Implemented in Mobile Toolbox (MTB). Journal of Intelligence, 13(12), 154. https://doi.org/10.3390/jintelligence13120154

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