Zeigarnik Effect

A psychological phenomenon identified by Bluma Zeigarnik in 1927 describing the tendency for people to remember interrupted or incomplete tasks better than completed ones. The effect explains why partially finished challenges, multi-level games, and serialized learning modules can sustain motivation and mental engagement over time. Accessibility educators and designers leverage the Zeigarnik effect when structuring training into bite-sized lessons, level-based games, or daily challenges that create anticipation and encourage learners to return to unfinished material.