ArticleBiological psychiatry global open science2026
Cortical Structure in Relation to Empathy and Psychopathy in 800 Incarcerated Men.
Article in Biological psychiatry global open science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Reduced empathy is a hallmark of individuals with high (i.e., clinical) levels of psychopathy, who are overrepresented among incarcerated men. However, a comprehensive, well-powered mapping of cortical structure in relation to empathy and psychopathy is still lacking. Methods: In 804 incarcerated adult men, we administered the Perspective Taking (IRI-PT) and Empathic Concern (IRI-EC) subscales of the Interpersonal Reactivity Index (IRI), the Psychopathy Checklist-Revised (PCL-R; with interpersonal/affective [F1] and lifestyle/antisocial [F2] factors), and T1-weighted magnetic resonance imaging to quantify cortical thickness (CT), surface area (SA), and structural-covariance gradients. Results: PCL-R F1 was uniquely negatively related to IRI-EC, while PCL-R F2 was uniquely negatively related to IRI-PT. Cortical structure was not related to the IRI subscales. In contrast, CT was related to PCL-R F1 (mostly positively), SA was related to both PCL-R factors (only positively), and both cortical indices demonstrated out-of-sample predictive utility for PCL-R F1. Compared to men with low psychopathy, men with high psychopathy had uniquely lower IRI-EC scores and increased SA (but not CT); effect sizes across the cortex were largest in the paralimbic class and somatomotor network, while spatial overlap with meta-analytic task-based activations was highest for (social-)affective/sensory clusters. Finally, the total sample revealed anterior-posterior structural-covariance gradients; in men with high psychopathy, the gradient of CT (but not SA) was globally compressed. Conclusions: Men with high psychopathy had reduced empathic concern, increased SA, and a compressed macroscale organization of CT, indicating selective co-alterations in empathy and cortical structure. Future work should build on these novel insights in both the general and incarcerated populations to inform the treatment of psychopathy.
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