A common assumption in the optimal taxation literature is that the social planner maximizes a welfarist social welfare function with weights decreasing with income. However, high transfer withdrawal rates in many countries imply very low weights for the working poor in practice. We reconcile...

The SOEP Group currently is preparing in addition to increasing the size of the core SOEP, to establish a new Innovation Sample (SOEP-IS). This will be established for the period 2012 to 2017 (with a cumulative number of presumably N=5,000 households). Now, in the year 2012, a new subsample is...

In light of the recent interest in using longitudinal panel data to study personality development, it is important to know if personality traits are related to panel attrition. We analyse the effects of personality on panel drop-out separately for an ‘older' subsample (started in 1984), a...

Evidence of assortative mating according to personality was reported in a previous SOEP-based study (Rammstedt & Schupp, 2008). Based on population representative data of almost 7,000 couples, high levels of congruence between spouses were found, which increased with marriage duration. Almost...

Objective: Older adults more often complain about sleep disturbances compared to younger adults. However, it is not clear whether there is still a decline of sleep quality after age 60 and whether changes in sleep quality in old age are mere reflections of impaired physical health or whether...