In an op-ed, Prof. Hal Hershfield explains how payment methods affect the amount we spend
— July 10, 2012
Excerpt from Psychology Today -- "...the more pain people felt when viewing how much an object cost – the less likely a person would be to subsequently buy that object when given the chance. The pain of paying, then, can be an effective way to ensure that we don’t overspend. But, it can also take away from an otherwise pleasurable experience..."