When analyzing the delinquency questions longitudinally, it must be taken into account that the question on delinquency in the face-to-face data collections from F2F3 onwards has been adapted to the extent that the questions 'Have you ever [...]' (variables del00) are only asked to new survey participants. Panel participants are instead asked the question 'In the last 24 months, have you [...]' (variables del04). The subsequent question on the frequency of the respective behavior refers to the period of the last 12 months in F2F1 and F2F2 (del01), and to the last 24 months in F2F3 (del05`). In CATI1, the question was asked as follows: 'In the last 12 months, have you [...]' (*del2) but no frequencies were asked. Parents provided proxy statements about delinquent behavior of their children aged 9 or younger (del2*[t,u,s]) in CATI1 only. Source: Adapted from: Reinecke, J., Stemmler, L., Suenkel, Z., Schepers, D., Weiss, M., Arnis, M., Meinert, J., Kucur-Uysal, B., Poege, A., Wallner, S., & Wittenberg, J. (2013). The Development of Deviant and Delinquent Behavior over the Life Course in the Context of Processes of Social Inequalities (No. 17; SFB 882 Working Paper Series). DFG Research Center (SFB) 882 From Heterogeneities to Inequalities. [URL link]