“…In line with the previous research on “heterotypic continuity,” we expected DIF for items that show lack of face validity, that is, items containing context factors that are not applicable to older age groups such as work, school, family, or origin (Balsis et al ., 2007; Van den Broeck et al ., 2012). However, none of the YSQL2 items concerning occupation, school, family, or origin contains DIF.…”