Beyond the Bottom Line: Relationship Reasons to Practice Thrift

Abstract

We analyze the impact of cognitive skills on two specific examples of consumer financial decisions where suboptimal behavior is well defined: first, the use of a credit card for a transaction after making a balance transfer on the account, and second, cases where individuals are penalized for inaccurate estimation of the value of one’s home on home equity loan or line of credit application. We match individuals from the US military for whom we have detailed test scores from the Armed Services Vocational Aptitude Battery test (ASVAB), to administrative datasets of retail credit from a large financial institution. Our results show that consumers with higher overall composite test scores, and specifically those with higher math scores, are substantially less likely to make a financial mistake. Importantly no such effects are found for verbal or for most other component scores. We also examine the effect of these mistakes on the consumer cost of credit (APR and fee) payments. We show that our matched sample is reasonably representative of both universes from which it is drawn.