The Impact of Music on Consumer Behavior: Insights from Dr. Adrian North

In the inaugural episode of my Nudge podcast, I had the pleasure of interviewing the insightful psychologist Dr. Adrian North, a pioneer in the fascinating study of how music influences consumer behavior. One of his seminal studies, conducted back in 1997, continues to impact our understanding of the psychology of music in marketing today.

The Experiment: A Symphony of Sales

North’s study is both simple and ingenious. Researchers stocked an English supermarket with four types of French and German wines, carefully matched in cost, dryness, and sweetness. For two weeks, they played either German oom-pah music or French accordion music through the store’s speakers, alternating daily. After observing sales, the results were telling: 83% of wine buyers chose French wine while the accordion music played, compared to a mere 65% who opted for German wines when Bavarian tunes were in the air.

Interestingly, when North interviewed customers post-purchase, none acknowledged that the background music had influenced their choices. This discrepancy raises intriguing questions about consumer awareness and the subconscious effects of sensory stimuli on buying behavior.

Is This Still Relevant? The Modern-Day Connection

While North’s findings are over 25 years old and based on a sample of just 82 shoppers, the connection between music and purchasing patterns remains compelling. A 2017 study by researchers at Montclair State University reaffirmed the concept. They found that playing Italian music in a university cafeteria significantly boosted sales of Italian dishes like chicken parmesan. Similarly, Spanish flamenco music increased the sale of paella.

These findings suggest that music continues to shape not just what we buy, but what we feel inclined to consume. Personally reflecting on my own experiences, during a recent trip to Paris, I was irresistibly drawn to local boulangeries each morning. The soft strains of French café music played a subtle yet undeniable role in tempting me to indulge in a fresh coffee and croissant.

The Broader Influence of Music

It turns out that the effects of music extend far beyond our wine and meal choices. In his book Pre-Suasion, psychologist Robert B. Cialdini reveals that music can even make children three times more likely to assist their peers. Similarly, research presented in Get It Done by Ayelet Fishbach shows that music can increase performance in gyms, boosting workout repetitions by an impressive 50%.

Moreover, Nick Kolenda’s work asserts that melancholy music can distort how we perceive significant life milestones, strikingly making them feel more distant.

Supermarket Shopping: The Tempo Effect

Among the studies that have had a lasting impact in the realm of retail is one by Ronald E. Milliman, aptly titled "Using Background Music to Affect the Behavior of Supermarket Shoppers." Milliman monitored shopper behavior over nine weeks and discovered a remarkable trend: customers spent 38% more when slow music (60 BPM) was played compared to faster tracks (108 BPM).

The findings suggested that the pace of music influences shopping speed. Slow-tempo tracks encourage a leisurely shopping experience, allowing customers more time to browse and make purchases.

Practical Applications: Chipotle’s Musical Strategy

In his book Sensehacking, Charles Spence sought out companies that have implemented the insights from music and tempo research. One notable example is Chipotle, which plays a strategic role in how customers experience their service. According to Spence, Chipotle’s in-house DJ adjusts the music’s tempo to optimize customer flow in its 3,500+ stores. During peak lunch and dinner rushes, faster-paced songs are played to expedite service and minimize lines. Conversely, during quieter times, gentler tunes encourage customers to linger and enjoy their meals.

The Soundtrack of Our Choices

Next time you find yourself in a bustling restaurant or a well-stocked supermarket, take a moment to notice the background music. It might just be influencing your choices more than you realize. Whether you’re savoring a burrito at Chipotle or selecting a fine bottle of wine, the sounds surrounding you are players in a larger narrative about consumer behavior and choice. What might have seemed like a casual element of the shopping experience could actually be a finely tuned instrument guiding your decisions.