Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Do people tend to spend less when using cash than credit cards?
One study found that, while people using gift certificates bought no more items than those who used cash, they tended to spend more per item. In "Study 3" the paper "Monopoly money: The effect of payment coupling and form on spending behavior", sets up a case where shoppers are given $50 in cash and $50 in gift certificates (the leftover of which can be exchanged for cash). They were asked to choose different brands and types of items to buy. They study found that There was no difference in the number of items purchased as a   function of payment form for scrip However means across all product categories show that   participants spent more per item when they were given [the gift certificate]