Dopamine boosts both fast thinking and slow habit learning — what this means for Thai classrooms and ADHD care
A major new study finds that the brain chemical dopamine helps the mind use two different learning systems at once: the fast, effortful working memory that solves new problems quickly, and the slow reinforcement-learning system that builds habits over time. The international team combined PET brain scans, a cognitive task designed to separate working memory from reinforcement learning, and drug challenges with methylphenidate and sulpiride in 100 healthy adults to show that natural dopamine production and drugs that change dopamine signaling differently shift how people learn and value effort (Nature Communications study). The findings help explain why some people prefer mentally demanding strategies and why stimulants can selectively speed habit-like trial-and-error learning (PsyPost coverage).