Door een halve minuut horizontale oogbewegingen te maken, zou je jouw creativiteit kunnen verhogen...
... half the participants spent thirty seconds shifting their eyes horizontally back and forth. This exercise is thought to help increase inter-hemispheric communication. The remaining participants acted as controls and just stared straight ahead for 30 seconds.
The key finding is that on their second creativity attempt, strong-handers who'd performed the horizontal eye movements subsequently showed a significant improvement in their creativity, in terms of being more original (i.e. suggesting ideas not proposed by others) and coming up with more categories of use. Staring straight ahead, by contrast, had no effect on creativity.
Another finding was that, overall, the mixed-handed participants performed better on the creativity task than the strong-handers, thus providing further evidence for a link between inter-hemispheric interaction, which mixed-handers have more of, and creativity. But it also turned out that mixed-handers didn't benefit from the horizontal eye movement task. It's as if they already have an optimum amount of hemispheric cross-talk so that the eye movements make no difference. This meant that after the strong-handers had performed the horizontal eye movements, their performance matched that of the mixed-handed participants.
The researchers also showed that, for strong-handers, the beneficial effects of the eye movement exercise lasted nine minutes for originality, but just three to six minutes in terms of coming up with more categories of use.
"Our findings may not apply to more unique populations who are characterised as 'highly creative'," the researchers said, "nor can we conclude ... that the thirty seconds bilateral eye movement task will turn an average individual into an artist, poet, scientist, philosopher, actor or sculptor. However, we certainly do propose that the ... eye movement task will result in a temporary increase in strong-hander's ability to think of creative uses for various house-hold objects."
De ietwat officiëlere en wetenschappelijkere versie van dezelfde studie:
uit: Influence of handedness and bilateral eye movements on creativity, (Brain and cognition, 71 (3), 204-14)
We investigated the effects of increased inter-hemispheric interaction (IHI) on five creativity dimensions (appropriateness, detail, categorical distinctiveness, fluency, and originality) of the Alternate Uses Task. Two methods were used to indicate degree of IHI. Trait IHI was indicated by individual differences in handedness, mixed-handers showing greater IHI than strong-handers. State IHI was directly manipulated by central (control group) and bilateral viewing conditions of a 30 s eye movement task (EM). Results indicate significantly higher creativity for mixed-handers, as compared to strong-handers, for all five sub-scores separately and linearly combined. Bilateral EM increased originality and categorical distinctiveness (i.e., flexibility) of strong-handers, but had no effect on mixed-handers. Strong-handers in the bilateral EM group were not different from mixed-handers. Additionally, the bilateral EM effect on strong-handers had different durations for originality (up to 7-9 min) and categorical distinctiveness (up to 3 min). The results suggest that greater IHI can facilitate creativity of strong-handers, but that the characteristically higher IHI of mixed-handers was unaffected by the bilateral EM manipulation.
In het artikel wordt verder verwezen naar een andere studie die in dezelfde lijn ligt: Als je er niet genoeg van kan krijgen om met simpele truukjes jouw 'hersenwerking' te verbeteren, kan je ook nog dit proberen: Deze studie zou aantonen dat gesaccadeerde oogbewegingen leiden tot een beter geheugen, tenminste als je rechtshandig bent...