In February 2011, the LISS panel was presented a questionnaire with questions that capture self-regulation and 8 questions that capture individualism/collectivism to test the relationship of these psychological constructs with core social science constructs such as values, political attitudes, trust, and well-being (which are already in the LISS core questionnaires). In addition, 8 questions were asked to measure empathy, allowing for an investigation of the interplay of regulatory focus, empathy, and trust.