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ABCD: Childhood Poverty Raised Risk; Inhibitory Control Split Resilience

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A 2026 ABCD cohort preprint involving 10,112 youth found that childhood poverty strengthened the link between cumulative early-life adversity and later behavioral problems; among poverty-exposed youth, inhibitory-control fMRI profiles split children into higher-vulnerability and buffered pathways. Research Highlights Poverty steepened adversity risk: In 10,112 ABCD youth, childhood poverty amplified the baseline early-life-adversity-to-CBCL Total Problems slope …

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Group fMRI Misread Cognitive Control in 4,423 Youth

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A 2026 ABCD stop-signal fMRI study found that group-level cognitive-control brain signals often failed to describe within-person brain dynamics: across 16 comparisons, between-person and within-person associations diverged, and several reversed direction.1 The practical warning is narrow but sharp: a brain pattern that separates people in a group may be the wrong map for explaining how …

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Stop-Signal Task Links Cannabis Use to Decision Efficiency, Not Inhibition

MHD featured image for stop-signal task modeling, evidence accumulation, and cigarette-plus-cannabis use.

A 2026 IMAGEN stop-signal task analysis found that evidence accumulation, response caution, and go-failure probability predicted cigarette-plus-cannabis use at ages 19 and 23, while inhibition parameters showed no apparent substance-use association.1 The calibrated reading is direct: conventional “poor inhibition” language may be too crude when the cigarette-plus-cannabis signal sits in general decision-making efficiency instead. Research …

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