Die Armen zahlen mehr - auch für Energie (ein Nachtrag zu Scherls Beitrag in ZVP, 2, 1978/2)

Not only do low-income groups have less money to spend, they also get less for it than higher-income families. Ölander and Scherl, among others, have discussed such a relationship between income level and "buying efficiency" (Olander), as measured by the price-amount-quality ratio realized for a given commodity. However, as Scherl concluded, there is almost no "conclusive direct empirical proof" f…