Why multitasking often leads to costly mistakes, according to science

A new study explores why multitasking isn’t always as simple as it seems. Researchers found that combining tasks like walking and listening can lead to mistakes. The findings offer practical lessons for managing daily activities more effectively. Psychologist Torsten Schubert from Martin Luther University Halle-Wittenberg (MLU) led the research. Alongside colleagues Roman Liepelt and Tilo Strobach, he examined how people handle multiple tasks at once. Their work defines multitasking as performing distinct activities with separate goals—whether done simultaneously or by switching rapidly between them.

The team discovered that even seemingly easy combinations, like walking while listening to a podcast, can create conflicts. When tasks demand too much attention, errors become more likely. Schubert shared further details in an interview, explaining how the brain struggles to balance competing demands. The study highlights that multitasking has clear limits. Even quick shifts between tasks count as a form of multitasking, and they can still overwhelm cognitive resources.

The research sheds light on why certain task combinations feel harder than others. It also provides useful guidance for organising work and daily routines. Understanding these limits could help people avoid mistakes when juggling multiple activities at once.