Close the loop to clear attention residue

Make clean transitions so part of your mind does not stay stuck on the last task.

Why it works

When you switch tasks before the first is resolved, attention residue lingers — part of your cognitive capacity stays bound to the unfinished task, degrading performance on the new one. Completing a task, or making a concrete plan for resuming it, lets attention release and fully redirect.

How to do it

1. Before switching, either finish the chunk or jot exactly where to resume and the next action.
2. Take a short, deliberate transition (stand, breathe) to mark the boundary between tasks.
3. Avoid "quick checks" mid-task — they leave the heaviest residue for their size.

Evidence

Leroy’s research introduced attention residue: people perform worse on a new task when the prior task was left unfinished, and a "ready-to-resume" plan reduces the residue. (observational)

Evidence is from controlled experiments and field studies; effect sizes vary and the "plan to resume" remedy is supported but not exhaustively trialed across contexts.

Sources

• Leroy (2009), "Why is it so hard to do my work?" attention residue, Organizational Behavior and Human Decision Processes

Common mistake

Switching at an arbitrary mid-point with no plan to resume, which maximizes residue and means you pay the re-entry cost twice.