This paper discusses the so-called commercial approach to microfinance under economic and ethical aspects. It first shows how microfinance has developed from a purely welfare-oriented activity to a commercially relevant line of banking business. The background of this stunning success is the...

We merge administrative information from a large German discount brokerage firm with regional data to examine if financial advisors improve portfolio performance. Our data track accounts of 32,751 randomly selected individual customers over 66 months and allow direct comparison of performance...

This paper studies why investors buy dividend-paying assets and how they time their consumption accordingly. We combine administrative bank data linking customers' consumption transactions and income to detailed portfolio data and survey responses on financial behavior. We find that private...

Self-control failure is among the major pathologies (Baumeister et al. (1994)) affecting individual investment decisions but cannot be measured bias-free. We link the time-series of government-controlled tobacco prices to debit/credit card transaction histories to identify smoking as a proxy for...

Self-control failure is among the major pathologies (Baumeister et al. (1994)) affecting individual investment decisions which has hardly been measurable in empirical research. We use cigarette addiction identified from checking account transactions to proxy for low self-control and compare over...