Ovsiankina Effect
Etymology
Named for Maria Ovsiankina, a Soviet-born psychologist who documented it in a 1928 study under Kurt Lewin. Interrupted subjects spontaneously resumed their tasks; the mind seemed to hold an open loop until it was closed.
noun phrase · /ov-see-AHN-kee-nuh ih-FEKT/
The urge to pick up and finish a task once it has been interrupted.
What it names
Names that itch to return to an unfinished job — the pull of the incomplete, even when no one is making you.
Example
He only meant to glance at the half-built model, but the Ovsiankina effect had him tinkering for an hour.
Related idea
The Ovsiankina effect is about resuming an interrupted task; the closely related Zeigarnik effect is about remembering it better than a completed one.