"A number of studies have pointed to various mistakes that consumers might make in their consumption-saving and financial decisions. We utilize a unique market experiment conducted by a large U.S. bank to assess how systematic and costly such mistakes are in practice. The bank offered consumers...

Germans are still very fond of using cash. Of all direct payment transactions, cash accounts for an astounding 82% in terms of number, and for 58% in terms of value. With a new and unique dataset that combines transaction information with survey data on payment behaviour of German consumers, we...

Some individuals borrow extensively on their credit cards. This paper tests whether present-biased time preferences correlate with credit card borrowing. In a field study, we elicit individual time preferences with incentivized choice experiments, and match resulting time preference measures to...