What Extracurricular Activities Actually Build — Evidence on Music, Sports, Language, and Coding

Lead

When a child says "I want to quit," a parent experiences several things at once. The reluctance to let go of an investment. The hope that continuing might lead somewhere. The fear of having pushed too hard.

Before treating "I want to quit" as a failure of willpower, it's worth considering that children around this age routinely reassess what they're doing — and that reassessment is developmentally normal. And before the choice collapses into "make them continue" or "let them stop," it helps to look at what the research actually says about what extracurricular activities do and don't build.

Background: The Weight of Expectations

Surveys in Japan (Japan Sports Agency, 2022) put extracurricular activity participation among children ages 7–12 at roughly 70% [6]. Sports, music, English conversation, coding, abacus, swimming — the menu is long, and the cost in time and money is real.

In Erikson's account of psychosocial development, middle childhood (ages 6–12) is structured around the tension between industry and inferiority. The experience of effort connecting to results builds a sense of industry. But the recurring experience of "I'm not good at this" or "this isn't enjoyable anymore" also has a developmental meaning — it is a normal re-evaluation, not a malfunction. Treating persistence itself as the goal makes it easy to miss what that signal is saying.

Music and the Brain: What the Evidence Actually Supports

"Music makes children smarter" is a claim that has circulated widely, loosely citing neuroscience. What do the studies actually show?

Sala and Gobet (2020) conducted a multilevel meta-analysis of 34 samples comprising 5,998 children, examining whether music training improves cognitive ability and academic performance [1]. The overall effect size was g = 0.20 — statistically significant, but small. When study design quality (randomization, comparison group adequacy) was controlled, the effect size shrank further, and publication bias was suggested.

The current state of the evidence is closer to "cannot be ruled out, but cannot be asserted with confidence" than to "proven." A separate strand of neuroscience research is more consistent. Herholz and Zatorre (2012) reviewed evidence that music training produces structural and functional changes in motor cortex, auditory cortex, and corpus callosum [2]. That music leaves something in the brain is plausible; that this translates directly into improved academic performance is a separate and less established claim.

The value of learning an instrument may lie less in cognitive enhancement than in something harder to measure: a means of emotional expression, an experience of music from the inside, and an encounter with long-term projects that require sustained commitment. Those are real outcomes — they simply are not the ones that circulate in popular accounts.

Early Sports Specialization: The Evidence Against It

The intuition that earlier specialization produces better athletes has driven many families toward committing young children to a single sport. The pediatric sports medicine literature pushes back hard on this.

Brenner (2016), writing for the American Academy of Pediatrics (AAP), found that children who specialized in a single sport before age 13 had overuse injury rates 46–50% higher than those who played multiple sports, and significantly higher burnout rates [3].

The American Orthopaedic Society for Sports Medicine (AOSSM) consensus statement (2016) similarly recommends multi-sport participation at least until puberty, and suggests at least one to two sport-free days per week even during a sport the child is active in [4].

Côté et al. (2009) describe early childhood (approximately ages 6–12) as a "sampling years" period, during which exposure to multiple sports is the most effective long-term pathway to both continued athletic participation and high performance [7]. The counterintuitive implication is that not narrowing down during this period builds the foundation for eventual specialization.

There is also a distinction worth making: a child who independently requests to focus more intensively on one sport is a different situation from a parent planning specialization from the outside. Sensitivity to which of those is occurring matters.

Coding: Promising but Early

Since mandatory programming education was introduced in Japanese elementary schools in 2020, interest in extracurricular coding programs has grown substantially. The evidence base, however, is still developing.

A 2023 MEXT survey found considerable variation across schools in both implementation quality and teacher readiness for programming education, with standardization identified as a challenge [5]. Evidence for effects on logical reasoning and problem-solving ability has been suggested, but longitudinal data are limited.

If coding is framed as "learning to write code" its scope is narrow. If it is framed as "training in how to structure and decompose problems" — a more accurate description of computational thinking — its potential value is broader. But whether this value is realized uniformly depends heavily on teaching quality, motivation, and sustained engagement. "It's required, so enroll in a program" is a weaker basis for enrollment than genuine curiosity about how things work.

Practical Takeaways

Don't make persistence itself the goal. When continuation becomes the objective, "I want to quit" reads as failure. Regularly asking a child "what did you enjoy, what didn't you enjoy?" and treating the answers as information rather than complaints keeps the evaluation in the child's hands.

Decide in advance what would count as a reason to stop. Rather than "just keep going" or "quit if you want," try to establish in advance: "let's try this through the next three months, and if [specific condition] we'll reconsider." This functions as a shared framework between parent and child, and it reduces the sense of failure that attaches to stopping something mid-course.

Keep sports plural through elementary school. The injury and burnout data are consistent across multiple sources: single-sport concentration before puberty elevates risk and often reduces long-term athletic engagement. A mix of sports, plus time for unstructured physical play, is the configuration most consistently associated with long-term participation.

Summary

Music training produces measurable but small cognitive effects; claims that it directly improves academic performance outrun the evidence. Early sports specialization raises injury and burnout risks; the research supports varied exposure through middle childhood. Coding shows potential but lacks long-term follow-up.

Across all of these, the activity itself matters less than the accumulation of a particular experience: choosing something, encountering difficulty, deciding whether to persist, and eventually making a decision that is genuinely the child's own. Extracurricular activities are among the first places where children negotiate their own intentions against the resistance of something hard. That encounter — more than the specific domain — may be the most durable thing any activity builds.

References

1. Sala G, Gobet F. Cognitive and academic benefits of music training with children: a multilevel meta-analysis. Mem Cognit. 2020;48(8):1429–1441. doi:10.3758/s13421-020-01060-2. PMID: 32728850.
2. Herholz SC, Zatorre RJ. Musical training as a framework for brain plasticity: behavior, function, and structure. Neuron. 2012;76(3):486–502. doi:10.1016/j.neuron.2012.10.011. PMID: 23141061.
3. Brenner JS; Council on Sports Medicine and Fitness. Sports specialization and intensive training in young athletes. Pediatrics. 2016;138(3):e20162148. doi:10.1542/peds.2016-2148. PMID: 27573090.
4. LaPrade RF, Agel J, Baker J, et al. AOSSM early sport specialization consensus statement. Orthop J Sports Med. 2016;4(4):2325967116644241. doi:10.1177/2325967116644241. PMID: 27104219.
5. Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. Survey on programming education in elementary schools, FY2023. 2023. URL: https://www.mext.go.jp/a_menu/shotou/zyouhou/detail/mext_02142.html
6. Japan Sports Agency. Survey on sports activities among children, FY2022. 2022. URL: https://www.mext.go.jp/sports/b_menu/toukei/chousa04/sports/1402816.htm
7. Côté J, Lidor R, Hackfort D. ISSP position stand: to sample or to specialize? Seven postulates about youth sport activities that lead to continued participation and elite performance. Int J Sport Exerc Psychol. 2009;7(1):7–17. doi:10.1080/1612197X.2009.9671889
8. Jayanthi NA, LaBella CR, Fischer D, Pasulka J, Dugas LR. Sports-specialized intensive training and the risk of injury in high school athletes. Am J Sports Med. 2015;43(4):794–801. doi:10.1177/0363546514567298. PMID: 25646361.