“…The Cognitive Reserve Index questionnaire (CRIq, Nucci et al, 2012) allows to estimate CR from education, occupational activity, and leisure-time activity as they concur in building up the reserve (Chan et al, 2018;Livingston et al, 2017;Scarmeas & Stern, 2003;Stern et al, 1995a, b;Ward et al, 2015). The CRIq is translated into many languages and it has been used both for clinical and research purposes (Artemiadis et al, 2020;Lavrencic et al, 2018;Lee et al, 2019;Maiovis et al, 2018;Montemurro et al, 2021a;Ozakbas et al, 2021). It has been also shown that, when using CRIq, the effect of CR significantly interacts with age in the expected cognitive performance (Montemurro et al, 2021b); in particular, as age increases performance is typically worse, but not when CRIq score is high.…”