Why Your Brain Fails at Multitasking—Even for Simple Tasks

A new study sheds light on how the brain struggles with multitasking. Psychologist Torsten Schubert from Martin Luther University Halle-Wittenberg (MLU) led the research, exploring why juggling tasks often leads to mistakes or delays. Even simple combinations, like walking while listening to a podcast, can stretch the brain’s limits. Multitasking is defined as handling multiple tasks with different goals at the same time. Schubert’s study found that the brain faces clear limits when trying to perform more than one demanding task simultaneously. Conflicts arise when both tasks require decisions at once, leading to slower reactions or errors.

The research also examined rapid task-switching, another form of multitasking. Even when tasks are done one after the other, traces of the first task linger in memory and interfere with the next. This carryover effect can reduce efficiency, especially in everyday work settings. Schubert explained that the findings highlight how multitasking often comes at a cost. Whether switching quickly between tasks or doing them at the same time, the brain struggles to maintain performance. Simple activities, such as walking while listening to a podcast, may seem effortless, but more complex combinations reveal the brain’s true limitations.

The study provides concrete evidence of the brain’s difficulties with multitasking. Tasks done together or in quick succession can slow down responses and increase mistakes. These insights could help people manage workloads more effectively in daily life.