“…For example, the German Socio-Economic Panel (SOEP) started assessing locus of control as early as the 1990s. In recent years, measures for risk aversion, the Big Five personality dimensions, intelligence, and a number of other major psychological variables have been incorporated into the study (Lohmann, Spieß, Groh-Samberg, & Schupp, 2009;Schupp, Spieß, & Wagner 2008). Other large-scale panel or cross-sectional studies, such as the International Social Survey Programme (ISSP), the European Social Survey (ESS), the German National Education Panel Study (NEPS), the German Longitudinal Election Study (GLES), the German Panel Study ''Labour Market and Social Security'' (PASS), the Household, Income and Labour Dynamics in Australia (HILDA) Survey, the UK Household Longitudinal Study (UKHLS), and the DNB Household Survey (DHS), have followed this trend and now include psychological variables in their questionnaires (cf.…”