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