Santangelo and associates report that “music is frequently played while we are engaged in other activities that rely on decision-making (e.g., driving). . . . We analyzed response times and accuracy from more than 100-thousand decisions and mapped the effects of music onto decision-process components with a mechanistic model of decision-making. We found evidence . . . . [that] decisions—across domains—were faster but less accurate with music. . . . Overall, our results suggest that background music shapes our decisions…