Both in the longitudinal French sample (Glymour, Tzourio and Dufouil 2012) and in cross-sectional PIAAC data (Paccagnella 2016a), more educated individuals experienced slightly faster skills decline. In contrast, a study using longitudinal Dutch data on individuals between ages 24 and 81 found that more educated adults experienced slow'er skills decline (De Grip et al. In terms of the skills distribution more generally, Paccagnella (2016a) observes that the dispersion of scores tends to increase with age in most countries in cross-sectional PIAAC data.