It is shown how one can effectively use cross-section data in modelling the change over time in aggregate consumption expenditure of a heterogeneous population. The starting point of our aggregation analysis is a dynamic behavioral relation on the household level. Based on certain hypotheses on...

The so-called retirement-savings puzzle is a phenomenon by which, contrary to what the basic life-cycle model predicts, households do not run down their wealth significantly during retirement. In this survey paper we briefly review the literature that attempts to solve the retirement-savings...