Publications of the Research Unit Labour Markets and Social Insurance

  1. ZEW Discussion Paper No. 11-017 // 2011

    Effects of Age at School Entry (ASE) on the Development of Non-Cognitive Skills: Evidence from Psychometric Data

    In this paper, we examine how school enrollment at a relatively younger or older age in relation to age-based cut-off dates for school entry affects the development of non-cognitive skills. Specifically, we…

  2. ZEW Discussion Paper No. 11-015 // 2011

    Clustering Life Trajectories - A New Divisive Hierarchical Clustering Algorithm for Discrete-valued Discrete Time Series

    The goal of clustering is to partition the objects (here: persons) into groups which ideally should be homogenous and well-separated (i.e. low within-group and high between-groups heterogeneity). In the context…

  3. ZEW Discussion Paper No. 11-013 // 2011

    Combined Stochastic and Rule-based Approach to Improve Regression Models with Mismeasured Monotonic Covariates Without Side Information

    The education variable in the IAB datasets suffers from problems like missing and misclassified values. The data problems do not occur randomly, but are highly associated with other variables from the dataset.…

  4. ZEW Discussion Paper No. 11-008 // 2011

    Orphans at Risk in Sub-Saharan Africa: Evidence on Educational and Health Outcomes

    Mortality rates among prime-age adults are dramatically high in many sub-Saharan African countries, and, as a consequence, the number of orphaned children is high and increasing. In this paper, we identify the…

  5. ZEW Discussion Paper No. 11-007 // 2011

    Variation of Learning Intensity in Late Adolescence and the Impact on Noncognitive Skills

    Recent research in economics reveals a substantial impact of personality traits or noncognitive skills on outcomes related to educational and labor market success. A virtue of these noncognitive skills compared…

  6. ZEW Discussion Paper No. 11-005 // 2011

    Asymmetries and Interdependencies in Time use Between Italian Parents

    In recent decades, changes in parents’ attitudes towards the importance of spending time with children to optimise their development have greatly affected patterns of time allocation among both working and…