Cialdini raamat
principle can unconsciously stimulate us to part with our money comes from a se-
ries of investigations on credit cards and spending (Feinberg, 1986). Within mod-
ern life, credit cards are a device with a psychologically noteworthy characteristic:
They allow us to get the immediate benefits of goods and services while deferring
the costs weeks into the future. Consequently, we are more likely to associate credit
cards and the insignias, symbols, and logos that represent them with the positive
rather than the negative aspects of spending.
Consumer researcher Richard Feinberg wondered what effects the presence
of such credit cards and credit card materials had on our tendencies to spend.
In a set of studies done in West Lafayette, Indiana, he got some fascinating-
and disturbing-results. First, restaurant patrons gave larger tips when paying
with a credit card instead of cash
annaabi.ee 
