Effects of background music on cognitive abilities

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Listening to music while doing something else is common yet the effects of background music on cognitive abilities are poorly understood. Conflicting findings from the available literature are likely to stem from the costs and benefits of background music that vary across contexts, tasks, and individuals. On the one hand, it is well established that music listening can improve how the listener feels, and enhanced emotional states (i.e., mood and arousal levels) improve cognitive performance. On the other hand, cognitive capacities, particularly those of working memory, are finite, and background music by definition implies that the listener is doing two (or more) things at once: the primary task (reading, driving, etc.) and listening to music. Hence, background music may reduce cognitive resources available for the primary task and hinder performance. These two opposing forces undoubtedly lead to positive effects in some instances but to negative effects in other instances. Moreover, the costs and benefits of background music are bound to vary across individuals.