Progress and momentum
Unfinished tasks (Zeigarnik and Ovsiankina)
People tend to return to interrupted tasks. The famous claim that unfinished tasks are remembered better did not hold up in a meta-analysis.
ContestedReplications or meta-analyses disagree. Do not assume the effect.
Example
You keep coming back to a puzzle you put down halfway.
Why it works
Zeigarnik reported better memory for interrupted tasks, and Ovsiankina reported that people tend to resume them. A 2025 meta-analysis confirmed the tendency to resume but found no general memory advantage.
On the web
Save half-finished quotes and quizzes and lead with "continue" on the next visit. Use a checklist to show what remains.
When it backfires
Nagging about unfinished work raises unsubscribes and churn. Do not build on the memory claim.
Sources
Supports a general tendency to resume interrupted tasks (Ovsiankina) but finds no general recall advantage for them (Zeigarnik).
Ghibellini, R., & Meier, B. (2025). Interruption, recall and resumption: A meta-analysis of the Zeigarnik and Ovsiankina effects. Humanities and Social Sciences Communications, 12. Open source
Connect with the classics
These links are editorial readings, not research findings. Check the original meaning on each classics page.
譬如為山，未成一簣，止，吾止也。Building a mound and stopping one basket short, it was I who stopped. Whether to resume interrupted work rests with the person, which is where resumption begins.
The Analects Zi Han: change and persistence →