Figure 4.

Means and standard errors for the raw Wechsler Adult Intelligence Scale–Third Edition (WAIS-III) scale scores at baseline (black bars) and follow-up 9 years later (gray bars). Asterisks mark significant differences between baseline and follow-up means from the generalized linear model analyses. The measures are grouped according to measurement type: verbal comprehension, working memory, perceptual organization, processing speed, or other.