







Using proprietary data, a survey, and an experiment with a major bank in China, this paper studies how credit card rewards affect perceived and actual consumer
Credit Cards as Spending Facilitating Stimuli: A Conditioning Interpretation
Abstract. Four experiments and one study were conducted to test the hypothesis that stimuli associated with spending can elicit spending responses. In all

Payment Rewards and Credit Card Debt: Experimental Evidence
We report on a controlled laboratory experiment in which participants make consumption, saving, and credit card repayment decisions when credit card purchases e
Do Payment Mechanisms Change the Way Consumers Perceive Products?
Abstract. Do payment mechanisms change the way consumers perceive products? We argue that consumers for whom credit cards (cash) have been primed focus mor

The Impact of Credit Cards on Spending: A Field Experiment
In a field experiment, we measure the impact of payment with credit card as compared with cash on insurance company employees' spending on lunch in a cafeteria.
Differences in Consumer Purchase Behavior by Credit Card Payment System
Abstract. A conceptualization of the relationships between alternative payment systems and various environmental and behavioral variables, which may serve

Time to Cut Up Those Debit Cards? Effect of Payment Mode on Willingness to Spend
Financial industry data indicate that consumers increasingly prefer debit cards over credit cards, especially as a means of enforcing financial self-discipline. Given prior research suggesting that credit cards act as spending facilitating stimuli, this move toward reduced credit card use would appear to be in the right direction. Ironically, however, the same logos that were implicated in facilitating spending with credit cards are the logos that appear on debit cards. In what should serve as an eye-opener to consumers, it is found that exposure to debit card logos does result in an increased willingness to spend, similar to credit cards.
Payment method and perceptions of ownership
How consumers pay influences how they feel about a transaction. In particular, paying by card has been argued to have an effect on the perception of cost, making it less salient and painful. We propose and show that payment method also influences how consumers feel about the acquired good. Specifically, we focus on effects of the payment method on psychological ownership, i.e., the perception of an object as “mine.” We propose that cash payment results in stronger psychological ownership because it influences the extent of perceived investment in an object. We provide evidence for the proposed effect from field and laboratory settings. Results of a longitudinal exit survey and an experiment show that cash payers report higher levels of immediate psychological ownership than card payers. However, this effect seems to depend on the meanings associated with a payment method. Asian students (who associate credit card payment with investment and debt) do not exhibit this effect. Moreover, the initial boost in psychological ownership seems to be comparably short-lived. While those paying in cash experience no further increase in psychological ownership over time, those paying by card do.

Always Leave Home Without It: A Further Investigation of the Credit-Card Effect on Willingness to Pay
In studies involving genuine transactions of potentially high value we show that willingness-to-pay can be increased when customers are instructed to use a credit card rather than cash. The effect may be large (up to 100%) and it appears unlikely that it arises due solely to liquidity constraints. In addition to demonstrating the effect, we provide a methodology for detecting it, and our findings suggest a source of variance to test alternative explanations.
A Mega-Replication of the Effect of Cash Versus Card Payment on Pain of Paying: Magnitude, Behavioral Outcomes, and Moderators
Abstract We revisit the widely accepted finding that paying with cash is more painful than paying with card by conducting the first systematic mega-replication (including 13 large-scale preregistered replications; a total of 32,371 participants, 65 products, and 57 price points ranging from $1.09 to $400). The aggregate evidence reveals four insights: (1) leveraging a broad set of established paradigms, we replicate the finding that paying with cash is more psychologically painful than paying with card, even among today’s consumers who own multiple cards, digital wallets, and virtual currencies; (2) comparing two outcome variables—amount spent and willingness-to-pay (WTP), we find a more reliable and larger overall direct effect of payment method on amount spent than on WTP; (3) these direct effects of payment method on outcome variables are mediated by pain of paying; (4) the mode-of-payment effect on pain of paying (and thereby on outcome variables) is moderated by individual differences, particularly the relative frequency of using cash versus card. We outline actionable guidance and future directions for researchers and practitioners interested in examining mode-of-payment effects, and discuss the value of and suitable approaches for future theory-driven large-scale replications.

The Red, the Black, and the Plastic: Paying Down Credit Card Debt for Hotels, Not Sofas
Using transaction data from a sample of 1.8 million credit card accounts, we provide the first field test of a major prediction of Prelec and Loewenstein’s theory of mental accounting: that consumers will pay off expenditure on transient forms of consumption more quickly than expenditure on durables. According to the theory, this is because the pain of paying can be offset by the future anticipated pleasure of consumption only when money is spent on consumption that endures over time. Consistent with this prediction, we found that repayment of debt incurred for nondurable goods is an absolute 10% more likely than repayment of debt incurred for durable goods. The strength of this relationship is comparable to an increment in 15 percentage points in the credit card annualized percentage rate. Our results have not only managerial implications for the structuring of financial transactions (e.g., that credit card customers should be given the option of paying off specific purchases) but also more general implications for exploiting variations in the pain of paying in incentive schemes aimed at customers and employees. This paper was accepted by Yan Chen, behavioral economics.

Purchase Justifiability Drives Payment Choice: Consumers Pay with Card to Remember and Cash to Forget
AbstractAlthough consumers often have multiple payment methods at their fingertips, such as cash and credit/debit cards, prior research is silent on how consumers choose between them. We home in on a key element of purchase—purchase justifiability—that affects how consumers choose to pay. Analysis of 118,042 real-world purchases and six experiments reveals that when consumers are motivated to forget (vs. remember) a purchase because they see it as difficult (vs. easy) to justify, they have an increased preference to pay with cash (vs. card) because cards create a “paper/electronic trail” that aids memory retrieval. These payment preferences are strongest among consumers most likely to recall/track their card spending, and manifest only when card expenses are trackable. We reconcile our results with the classic effect of payment method on pain of paying and discuss implications for merchants and for financial institutions designing payment methods of the future.

Managing Mental Accounts: Payment Cards and Consumption Expenditures
Does mental accounting matter for total consumption expenditures? We exploit a unique setting in which individuals exogenously received a new credit card, without requesting one. Using random variation in the time of receipt we show that individuals temporarily increase total consumption expenditure by making purchases with the new card without reducing spending on the others. We do not observe a corresponding increase in indebtedness. Total consumption expenditure rises even for the least liquidity-constrained individuals. The evidence is consistent with consumers treating methods of payment as nonfungible budget categories, as suggested by models of mental accounting and narrow bracketing.

Overconfidence and the Credit Card Debt Puzzle
This article investigates the credit card debt puzzle. Simultaneously holding credit card debt and liquid assets is puzzling given the sizeable difference between interest rates of debt and assets. However, this behavior is common—about 31% of households in the 2016 Survey of Consumer Finances. The cost of co-holding may be justified if consumers anticipate future restrictions in credit or if they need to maintain liquidity. Other existing explanations for co-holding include impulsive spending and low financial literacy. This research reveals a new explanation for the credit card debt puzzle: consumers’ overconfidence of their financial knowledge. Using a Coarsened Exact Matching method, we found that overconfident consumers were 20%–40% more likely to co-hold credit card debt and liquid assets.
Do Liquidity Constraints and Interest Rates Matter for Consumer Behavior? Evidence from Credit Card Data
Abstract. This paper utilizes a unique data set of credit card accounts to analyze how people respond to credit supply. Increases in credit limits generate

Borrowing on the Wrong Credit Card? Evidence from Mexico
We establish new facts about the way consumers allocate debt among their credit cards using data for a representative sample of cardholders in Mexico. We find that relative prices are weak predictors of the allocation of debt, purchases, and payments. Consumers allocate a large fraction of their debt to high-interest cards, incurring a cost of 31 percent above the minimum. Using an experiment, we find that consumers do not substitute in the price margin, although they respond to salient temporary low-interest offers. We conclude that limited attention and mental accounting best rationalize our results and discuss implications for the market.
Why Do Shoppers Use Cash? Evidence from Shopping Diary Data
Recent studies find that cash remains the dominant payment choice for small‐value transactions despite the prevalence of alternative payment methods such as debit and credit cards. An important policy question is whether consumers truly prefer using cash or merchants restrict card usage. Using unique shopping diary data, we estimate a payment choice model with individual heterogeneity, controlling for merchants' acceptance of cards. Based on a policy simulation imposing universal card acceptance among merchants, we find that overall cash usage would decrease by only 8.0 percentage points, implying that cash usage in small‐value transactions is driven mainly by consumer preferences.
