The Berlin Aging Study II (BASE-II) is a multidisciplinary study that allows for the investigation of how a multitude of health status factors as well as many other social and economic outcomes interplay. The sample consists of 1,600 participants aged 60 to 80, and 600 participants aged 20 to...

Xu’s theorem comforts ranking the freedom of choice provided by budget sets as their volume in deriving it from three axioms. Yet, one and a half of these axioms can be discussed. In contrast, simple logic – it seems – leads one to order the freedom provided by budgets sets as the distance...