Multitasking and Cognitive Performance

Multitasking is often treated as a valuable skill, but cognitive research tells a more sobering, well-documented story.

What's Actually Happening During "Multitasking"

Rather than truly processing two tasks simultaneously, the brain generally rapidly switches attention back and forth between tasks — a process researchers call task-switching, not true parallel processing.

The Documented Cost of Task-Switching

Each switch carries a measurable cognitive cost, research consistently showing multitasking increases total task completion time and error rates compared to sequential, single-task focus.

Why It Feels Productive Anyway

Multitasking can feel engaging and busy, which research suggests may explain the persistent belief in its effectiveness despite objective performance measures showing otherwise.

A More Effective Alternative

Batching similar tasks together and working through one task fully before switching to the next, consistent with the single-tasking strategy covered in our focus piece, is the better-supported approach.

The research is fairly clear: multitasking generally reduces performance rather than enhancing it — single-tasking, however less exciting it feels, tends to win on actual measured outcomes.