Scientific expertise

Publications that document the methods and subject areas used in client reviews.

The work below shows the basis for reviewing claims about cognition, brain health, aging, learning, measurement, neuroimaging, and real-world performance. Each paper demonstrates a method or judgment task that also appears in scientific diligence.

Core expertise

Attention, neuroplasticity, and cognitive resilience.

These studies show experience with integrative review, multivariate analysis, EEG and ERP, aging, and the measurement of long-term experience.

Published online 2026Ageing Research Reviews

Experience-driven neural efficiency and reserve in aging: Evidence from bilingual attentional adaptation

John G. Grundy & Febriana Grundy

An integrative review of how sustained bilingual attentional demands may reorganize control systems, increase processing efficiency, and contribute to cognitive reserve across aging.

Relevant to client work: Assessing evidence syntheses, mechanistic arguments, cognitive-reserve claims, and whether long-term experience plausibly changes brain function across aging.

Ageing Research Reviews. https://doi.org/10.1016/j.arr.2026.103282

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Published 2026PNASCC BY-NC-ND 4.0

Bilingualism predicts executive-function resilience after COVID-19 in aging

John G. Grundy & Melanie Pujols-Beltran

A lifespan study using multivariate and moderation analyses to examine whether bilingual experience relates to executive-function resilience, particularly task switching, among older adults reporting COVID-19 history.

Relevant to client work: Evaluating multivariate models, moderation, individual-differences evidence, executive-function outcomes, and resilience claims.

Proceedings of the National Academy of Sciences, 123(23), e2532470123.

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In pressBilingualism: Language and CognitionGold open access · CC BY 4.0

Bilingualism shapes neural control: Distinct experiences predict conflict monitoring and sustained attentional control

John G. Grundy, Aslı Yurtsever & Kaiah N. Sotebeer

An ERP study examining how second-language usage, proficiency, age of acquisition, and switching experience relate to behavioral conflict effects, the N2, and the conflict slow potential.

Relevant to client work: Evaluating EEG and ERP evidence, measurement of complex experiences, cognitive-control claims, and whether distinct predictors support distinct mechanisms.

The author-accepted manuscript is available below. The publisher link and final citation will be added when the version of record becomes available.

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Additional expertise

Clinical, measurement, and applied research beyond attention and neuroplasticity.

These papers show experience with clinical neuroimaging, MRI and brain aging, measurement reliability, and the transfer of laboratory or simulator findings to real performance.

Published 2026Neurobiology of AgingOpen access · CC BY 4.0

Cognitive reserve is associated with less cognitive decline from white matter hyperintensities

Arthur P. Hamilton, Kaiah N. Sotebeer, John G. Grundy, et al.

An MRI-based study using lesion-derived connectivity disruption and partial least-squares path modeling to examine cognitive impairment and resilience across three aging datasets.

Relevant to client work: Brain-health and aging claims, MRI-derived biomarkers, multivariate path models, and cognitive-reserve interpretations.

Neurobiology of Aging, 160, 1-9. https://doi.org/10.1016/j.neurobiolaging.2025.12.004

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Forthcoming 2026Journal of Affective Disorders

Ketamine-related neural changes in treatment-resistant depression: A multimodal synthesis of fMRI and PET studies

Nesreen Sedeek, Carley Rivers, Lucas Williamson, Ayoub Asadi & John G. Grundy

A clinical-neuroscience synthesis integrating fMRI and PET findings across heterogeneous designs, task contexts, analytic approaches, and post-infusion timing.

Relevant to client work: Clinical-neuroscience claims, multimodal evidence synthesis, heterogeneous methods, and the interpretation of treatment mechanisms.

Journal of Affective Disorders, 408, 121891. https://doi.org/10.1016/j.jad.2026.121891

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Published 2022Frontiers in PsychologyOpen access · CC BY 4.0

The specificity and reliability of conflict adaptation: A mouse-tracking study

John G. Grundy

A measurement-focused study testing whether conventional reaction-time effects and dynamic mouse-tracking indices provide reliable evidence about domain-general cognitive-control processes.

Relevant to client work: Assessment validity, measurement reliability, behavioral metrics, and whether a common effect reflects a stable individual difference.

Frontiers in Psychology, 12, 770509. https://doi.org/10.3389/fpsyg.2021.770509

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Published 2016Human Factors

The effectiveness of simulator motion in the transfer of performance on a tracking task is influenced by vision and motion disturbance cues

John G. Grundy, Stefan Nazar, Shannon O'Malley, Martin v. Mohrenshildt & Judith M. Shedden

An applied experiment on simulator design, training transfer, visual and motion cues, performance accuracy, and the practical value of expensive motion platforms.

Relevant to client work: Training transfer, human factors, performance measurement, and whether costly product features produce practical benefit.

Human Factors, 58(4), 546-559. https://doi.org/10.1177/0018720816639776

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Methods used in client reviews

Client reviews draw on both subject knowledge and methodological experience.

Across these publications, I have designed experiments, analyzed behavioral and neural data, synthesized mixed literatures, and developed mechanistic explanations. Those same skills are used to assess client evidence.

Methods represented in the publications

Behavioral experiments and individual-differences designs
EEG and event-related potentials
Structural and functional neuroimaging
Multivariate modeling and latent-variable approaches
Structured evidence synthesis and theory development

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