The effects were noticeable. One extra year of schooling increased memory scores four decades later by about 0.26 (on a scale of 10), or about 15% of standard deviation, and similar effects were found for verbal fluency.
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The effects were noticeable. One extra year of schooling increased memory scores four decades later by about 0.26 (on a scale of 10), or about 15% of standard deviation, and similar effects were found for verbal fluency.