How Credit Cards Affect Our Brains

It’s been known for decades that credit cards encourage spending. But why that happens still isn’t entirely clear. New research offers some fresh insight into the causes—and how consumers might be manipulated in an increasingly cashless society.

Research on credit-card spending has tended toward the explanation that delaying payment removes a barrier to purchases in shoppers’ minds. A study published in February in Scientific Reports found evidence of another kind of trigger. Differences it found in brain activity between shoppers planning to use a credit card and those planning to buy with cash indicate that buying on credit doesn’t just ease shoppers’ inhibitions, it actively encourages purchases, the researchers say.

The upshot: When people are shopping with credit cards and see a product they like, the neural network in the brain that produces a sensation of reward perks up, which seems to create a craving to spend, says Sachin Banker, assistant professor at the University of Utah, who worked on the study as a Ph.D. student at the MIT Sloan School of Management.

“You’re basically feeling more reward when you shop with credit cards,” he says. “We don’t see that with cash. It was actually a very stark difference.”

Researchers used a form of magnetic resonance imaging to measure the brain activity of the study subjects as they participated in a shopping exercise. Each participant was shown a total of 84 everyday products over the course of three sessions and was asked whether they would buy each product at the stated price. Half the products were offered for purchase by credit card and half for purchase with cash. None of the products cost more than $50.

The differences in the shoppers’ brain activity support the hypothesis that after repeated credit-card purchases over time the brain learns to anticipate the rewards of credit-card shopping, according to the report. And that suggests that consumers could be conditioned to spend through the use of various sensory rewards in new payment systems, Dr. Banker says. For instance, with digital payments the use of particular sounds or vibrations on your smartphone when you make certain purchases but not others could, over time, teach your brain to anticipate rewards for buying specific products while you’re shopping.

Dr. Banker adds that further research could be done to see if the study’s theories hold true at higher prices. It also could study consumers who tend to overuse or misuse credit cards, to understand further why they act as they do. This study focused on people who mostly paid on time and used credit cards appropriately. Understanding brain patterns for other types of consumers could help lead to solutions that attempt to pre-empt harmful spending behaviour, Dr. Banker says.

A new investment fund targeting celebrity-founded consumer brands has secured US$40 million in commitments and is rapidly approaching its US$50 million fundraising target, signalling growing investor appetite for alternative opportunities beyond traditional asset classes.

The Global Talent Fund, which has a maximum raise of US$100 million, focuses on building and investing in consumer businesses alongside celebrities, athletes, and influential personalities who play an active role as co-founders rather than simply endorsing products.

The strategy is based on the belief that changes in consumer behaviour, particularly the rise of social media and digital engagement, have fundamentally altered how brands are built and scaled.

GTF founding partner Jeremy Hunt, who is helping lead the fund’s strategy, said consumers increasingly feel connected to personalities they follow online and are more willing to support products developed by those individuals.

“Consumers are searching for content to engage with, and when a celebrity they like or follow takes them on the journey of creating a product or brand, they genuinely feel part of that process,” he said.

The fund is targeting high-growth consumer sectors including wellness, hydration, beauty and recovery, areas Hunt believes continue to benefit from strong global demand and ongoing innovation.

Rather than backing celebrity endorsement deals, the fund is seeking businesses where talent is deeply involved in product development, brand creation and long-term growth.

According to Hunt, authenticity remains one of the biggest differentiators between successful celebrity-backed brands and those that fail.

“The consumer can see clearly if someone is simply being paid to promote a product,” he said. “The winners are typically the brands where the celebrity has genuinely helped build the business from the ground up.”

The model has attracted support from several prominent Australian investors and business families, reflecting broader interest in alternative investments with global growth potential.

Hunt said consumer brands offered a level of tangibility that many investors found appealing.

“Consumer brands are what we touch, feel, smell and taste every day,” he said. “Our investors understand the growth potential in the model, but they also want to be part of the journey.”

The fund’s rapid progress towards its fundraising target comes amid growing recognition that celebrity influence, when combined with strong commercial execution and scalable business models, can create significant enterprise value.

With several high-profile celebrity-founded businesses generating billion-dollar exits in recent years, supporters of the strategy believe the opportunity remains in its early stages.

How Credit Cards Affect Our Brains

Buying with plastic doesn’t just eliminate a barrier to buying. It actively encourages purchases.

With US$40 million already committed, the Global Talent Fund is attracting investor attention with a strategy focused on building globally scalable consumer brands alongside high-profile talent.