30 / UX Laws

Zeigarnik Effect

An interrupted goal can remain mentally active when a person still intends to return to it.

Visual proof

Incompletion can keep a goal present, but a clear plan can let the mind put it down.

Story

A person stops halfway through an application when a document is missing. If the product saves the draft and names the next required step, the open task has a plan. A vague reminder only adds pressure.

Origin

Bluma Zeigarnik published experiments on completed and interrupted tasks in 1927. Later research found that unfulfilled goals can stay cognitively active and that making a specific plan can reduce that effect.

Field Rules

  • 01

    Save partial work and show exactly where to continue. A resumable task is more useful than a progress indicator with no path forward.

  • 02

    Use reminders for goals the person chose and can act on. Let them control timing, frequency, and whether the reminder remains active.

  • 03

    Turn an open loop into a plan. Name the next step, what is needed, and when the task can realistically continue.

  • 04

    Provide clear closure when work is complete. Remove stale badges, confirm the outcome, and stop prompting for a task that is already finished.

Examples

Digital systems

A saved application with a next step

The service records completed sections, identifies the missing document, and offers a direct route back. The reminder supports a real intention instead of creating artificial urgency.

Physical signals

A paused task on a workbench

Parts left in order with a note about the next step make a repair easier to resume. Packing everything away without a record forces the person to reconstruct the task later.

Application

An open task has no route back

The product reminds someone that work is incomplete but does not preserve progress, explain what remains, or help them decide when to continue.

Resolves with
Make resumption concrete and closure real

Save the work, identify the next step, respect reminder preferences, and close the loop completely once the person's goal is achieved.

Sources