Key result
New framework proposes executive friction to explain the knowing-doing gap in executive dysfunction.
Why the study?
The dissociation between intact knowledge and failed implementation (the knowing-doing gap) across neurological and neuropsychiatric conditions is clinically important but lacks a unified, measurable account.
Proposes a translational framework and testing chain to measure 'executive friction' in neurological and neuropsychiatric conditions.
Theoretical framework for executive friction invites empirical testing in neurology; leaves open clinical adoption pending validation.
Across neurological and neuropsychiatric conditions, patients often know what they should do yet cannot bring themselves to do it. This dissociation between intact knowledge and failed implementation, which we call the knowing-doing gap, is clinically important but lacks a unified, measurable account. We propose that converting knowledge into action carries a cost, termed executive friction (Ψ f ), and that behavior breaks down when this cost exceeds the control resources available to pay it. The proposal is specified at two levels: a measurable factor estimated from observable indicators, and a family of candidate mechanisms in which friction is read either as accumulated control effort or as departure from a habitual default. We model distress as a function of how rapidly friction is rising, how the person appraises the situation, and of executive collapse, which we treat as the point at which control demands outstrip available capacity. The central contribution is practical: a low-cost testing chain that combines behavioral control tasks, shifts in the language of ability (e.g., “can” vs. “cannot”), and autonomic physiology (heart-rate variability and skin conductance), with neural and biochemical measures kept as optional add-ons. Depression, obsessive-compulsive disorder, and Parkinson's disease serve as contrasting test cases with distinct predicted signatures rather than as replacements for existing diagnostic categories. We present five preregistration-ready hypotheses with explicit rejection criteria. No new data are reported.
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Yuxin Zhang (2026) studied Executive dysfunction. Executive friction framework was evaluated. The paper proposes a translational cross-modal control-cost framework introducing 'executive friction' to explain the knowing-doing gap in executive dysfunction, reporting no new empirical data.
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