Positive Expectation Improves Eyesight

Imagine seeing better by thinking differently. That's a vision with a future, according to Harvard University psychologist Ellen Langer.

Eyesight markedly improved when people were experimentally induced to believe that they could see especially well, Langer and her colleagues report in the April Psychological Science.

Such expectations actually enhanced visual clarity, rather than simply making volunteers more alert or motivated to focus on objects, they assert.

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