Our irra­tional­ity toward money and inabil­ity to fully visu­alise the impact of dis­tant events is how credit card com­pa­nies thrive and many bank bal­ances suffer.

That’s the con­clu­sion one draws after read­ing this arti­cle from Time that looks at a num­ber of stud­ies show­ing that we fail mis­er­ably in mak­ing log­i­cal deci­sions about money when we use credit cards rather than cash.

As a species we’re just really bad at under­stand­ing costs that come later on. Instead, we assign a dis­pro­por­tion­ate amount of impor­tance to what’s imme­di­ate and tangible. […]

Once we’ve got our card in hand, our behav­ior becomes rid­dled with irra­tional­i­ties. In one exper­i­ment, Drazen Prelec and Dun­can Simester of the Mass­a­chu­setts Insti­tute of Tech­nol­ogy found that peo­ple were will­ing to pay twice as much for bas­ket­ball tick­ets when they were using a credit card as opposed to pay­ing cash. Credit-card spend­ing just doesn’t feel like real money. In another study, Nicholas Soule­les of the Uni­ver­sity of Penn­syl­va­nia and David Gross of the con­sul­tancy Com­pass Lex­e­con cal­cu­lated that the typ­i­cal con­sumer unnec­es­sar­ily spends $200 a year in inter­est pay­ments by keep­ing a siz­able stash of cash in sav­ings or check­ing while at the same time car­ry­ing a credit-card bal­ance. In our heads, the two don’t line up.