Psychology says people who focus on one thing at a time aren't wasting time by refusing to handle several tasks together. Many people believe that multitasking helps them complete more work in less time. Research in psychology and cognitive science suggests that the brain does not truly perform several demanding tasks at once. Instead, attention moves between tasks. Each switch requires the brain to adjust to a different set of information and rules. This process can increase mental fatigue and errors. Focusing on one task at a time is called monotasking or single-tasking and can help people use their attention more effectively.
