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.
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.