A deep dive into the Mozart Effect
Written by Rena Georgakopoulos-Ueta
Edited by Renee Lee
Have you ever wondered whether your intelligence could in fact have been shaped by the music you listened to as a child? The idea probably sounds too good to be true. Yet, for a period of time, this wasn’t just a casual thought, but a genuinely serious scientific question circling through the public.
You might have heard of the “Mozart Effect.” It refers to the idea that listening to classical music (particularly Mozart) can boost cognitive performance. Popular belief is that it can produce lifelong genius. Yet, this idea is in fact stretched far beyond what the data actually showed.
In 1993, Francis Rauscher, a psychologist, performed an experiment on 36 college students. Participants took spatial reasoning tests, each after three conditions: 10 minutes of Mozart’s Piano Sonata K.448, 10 minutes of silence, and 10 minutes of monotone speaking. The results seemed quite evident: students scored noticeably higher on spatial reasoning tests after listening to Mozart than after listening to either of the other two recordings.
Photo of Angelina Chen ‘27 taken by Julia Leavitt (jal569@cornell.edu).
Importantly, Rauscher did not make any claims in her published article claiming that listening to classical music boosts IQ. In fact, she explicitly pushed back against that interpretation. As she stated in an interview, “It’s very important to note that we did not find effects for general intelligence, just for [spatial reasoning]. It’s a small gain and it doesn’t last very long.” In fact, the “enhancing effect” only lasts approximately 10 to 15 minutes. So originally, the so-called “Mozart Effect” as it was named described only a limited and temporary effect, not an all-encompassing life hack.
This mild significance was short-lived, however. Rauscher’s single-page summarizing article that was supposed to be vaguely interesting immediately came to the attention of the media. The Associated Press called her before the paper was published, and posted it. As more outlets caught on, the publications strayed further away from her original research and nuance to claim that “Mozart makes you smarter.”
From there, the idea accumulated into something far more outreaching than the data supported. It became quite common to hear that exposing babies to classical music would permanently increase IQ or be a significant factor in future academic success. Rauscher said in an interview, "Generalizing these results to children is one of the first things that went wrong. Somehow or another the myth started exploding that children that listen to classical music from a young age will do better on the SAT, they'll score better on intelligence tests in general, and so forth."
By the late 1900s, it had even entered public policy. In fact, in 1998, Georgia’s governor Zell Miller proposed using $105,000 from the state spending budget to send free classical music CDs to every newborn in the state. Tennessee soon followed suit. The idea had transformed from a small cognitive psychology experiment to a government-backed “brain development strategy.”
Rauscher herself believes that part of the appeal of this craze is its quick-fix nature. After all, the idea of playing music making your child smarter is emotionally satisfying, even if completely oversold.
As more researchers have tried to replicate and expand the findings, the picture became less impressive very quickly. By the late 1990s, studies suggested that the effect from listening to classical music was not about intelligence at all, but rather short-term arousal and mood. In 1999, a meta-analysis demonstrated that cognitive enhancement by listening to Mozart is miniscule and derives entirely from performance on a very specific type of cognitive task only. Chablis’ explanation for this is incredibly simple: enjoyment arousal. The idea is that music enhances thinking because it has the potential to engage the mind.
Photos taken by Julia Leavitt (jal569@cornell.edu).
Later studies reinforced this idea. For instance, McCutcheon (2000) found no differences in spatial reasoning whether participants listened to classical music, jazz, or silence. More comprehensive analyses, such as the 2010 meta-analysis by Formann, Voracek, and Pietschnig examined 39 studies and concluded that the overall effect was extremely small and not reliable as evidence for any real cognitive enhancement. They also pointed out something important – studies affiliated with the original researchers often showed inflated effect sizes relative to the results of research done by other labs, suggesting publication bias. They did state, however, that as suggested by several studies performed in the past, increases in performance results could be attributed to being in a positive mood.
Essentially, the more carefully the matter was looked at, the less dramatic the message of the original study became. The current consensus is that there is no strong evidence that classical music boosts general intelligence. But music can influence short-term performance, mainly through mood. This is sometimes called the arousal hypothesis – the idea that when you’re more engaged or emotionally activated, you perform slightly better on certain tasks. It’s thus not Mozart dependent, but mental-state dependent.
"The key to it is that you have to enjoy the music," Rauscher says. "If you hate Mozart you're not going to find a Mozart Effect. If you love Pearl Jam, you're going to find a Pearl Jam effect."
And yet, even after this clarification, the idea didn’t fully disappear; it took on new and sometimes strange forms.
For instance, Anton Stucki, a sewage operator in the city Treuenbitzen, Germany, developed a sound system in the sewers through which Mozart’s music would be played based on unproven ideas that it could stimulate the degradation of bacteria. "My theory as to why it works is that Mozart managed to transpose universal laws of nature into his music. It has an effect on people of every age and every cultural background. So why not on microbes? After all, they're living organisms just like us."
So where does that leave us?
The idea that classical music makes you permanently smarter is not supported. But the slightly more subtle truth is still interesting to note: that your cognitive performance is sensitive to your emotional state, and music is one of the fastest ways to shift that state (even if very briefly).
So while Mozart won’t raise your IQ, it might still shape how you think in the moment. And if nothing else, this story can leave you with a smaller yet still significant takeaway: recognizing how easily we mistake feeling engaged for being intelligently enhanced. After all, isn’t it tempting to stretch a compelling idea in our favor, even if it leads us as far as applying it to bacteria in a sewer?
Rena Georgakopoulos-Ueta ‘29 is in the College of Arts and Sciences. She can be reached at rig36@cornell.edu.
Sources:
Chabris, C. F. (1999). Prelude or requiem for the “Mozart effect”? Nature, 400, 826–827. https://doi.org/10.1038/23608
Connolly, K. (2010, June 2). Sewage plant plays Mozart to stimulate microbes. The Guardian.
McCutcheon, L. E. (2000). Another failure to generalize the Mozart effect. Psychological Reports, 87(1), 325–330. https://doi.org/10.2466/pr0.2000.87.1.325
Pietschnig, J., Voracek, M., & Formann, A. K. (2010). Mozart effect–Shmozart effect: A meta-analysis. Intelligence, 38(3), 314–323. https://doi.org/10.1016/j.intell.2010.03.001
Rauscher, F. H., Shaw, G. L., & Ky, C. N. (1993). Music and spatial task performance. Nature, 365, 611. https://doi.org/10.1038/365611a0
Sack, K. (1998, January 15). Georgia’s governor seeks musical start for babies. The New York Times, A12.
Spiegel, A. (2010, June 28). Mozart effect was just what we wanted to hear. NPR. https://www.npr.org/2010/06/28/128104580/mozart-effect-was-just-what-we-wanted-to-hear
Steele, K. M. (2000). Arousal and mood factors in the “Mozart effect.” Perceptual and Motor Skills, 91(1), 188–190. https://doi.org/10.2466/pms.2000.91.1.188
