E-learning Curve Blog at Edublogs

Here’s an unusual but potentially very useful instructional strategy, one that takes advantage of peoples’ need for resolution or for closure. The Zeigarnik effect states that people remember uncompleted or interrupted tasks better than completed ones.

Russian psychologies Bluma Zeigarnik first studied the phenomenon in the late 1920’s after her professor, Gestalt psychologist Kurt Lewin, noticed that waiters remembered orders only as long as the order was in the process of being served.

Research indicates that:

1. the Zeigarnik effect is likely to appear if the subject is “ego-involved” in the task to some extent (such as in a learning activity)
2. the effect is more likely to appear if the task doesn’t seem to be part of the training plan
3. the effect is most likely to appear if the subject has set a genuine level of aspiration in the interrupted task

Musicians intuitively use this effect when writing musical ‘hooks,’ or for concluding pieces of music. By using a “suspended” chord, where the third has been displaced by either of its dissonant neighbouring notes, forming intervals of a major second or (more commonly) a perfect fourth with the root. The resulting unexpected dissonance is then satisfyingly resolved by introducing the displaced note.

This can be heard to great effect in the main musical theme of Pinball Wizard by The Who (which transitions from a F#sus4 to a F#maj), or more sophisticatedly, as a plagal or “Amen” cadence in the final phrase of The Beatles’ She’s Leaving Home, or the coda (with typically Baroque flourishes) of Bach’s Canon alla Decima, Contrapuncto alla Terza.

In Gestalt psychology, the Zeigarnik effect has been used to demonstrate the general presence of Gestalt phenomena: not just appearing as perceptual effects, but also present in cognition.

The implication of this is that learners who wish to remember material better should take breaks in unrelated fields or games before completing exercises.

… so the next time you see me playing Civilization 4 when I’m supposed to be writing that white paper, I’m learning.

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