Confidence Isn’t Something Kids Have. It’s Something They Build.

Pool 45 studies on athletes and you get one useful number. In a 2000 meta-analysis in Research Quarterly for Exercise and Sport, Moritz, Feltz, Fahrbach and Mack found the average correlation between self-efficacy (an athlete’s belief they can pull off a specific task) and actual sport performance was .38. That is a real relationship. It is also nowhere near destiny. So the question every parent and coach argues about on the sideline is worth asking straight: can you train confidence, or do some kids just have it?

Confidence is not one thing

Woodman and Hardy pooled 48 studies for the Journal of Sports Sciences in 2003. Overall, self-confidence correlated with competitive performance at r = .24. The link was stronger in high-standard competition (.33) than lower levels (.16), and it doubled depending on how confidence was measured (.38 with other measures vs. .19 with the standard competitive anxiety questionnaire). Squared, .24 works out to roughly 6% of the variation in performance.

Translation: the number moves a lot depending on who you test and how you ask. When people call a kid “confident,” they usually mean loud, outgoing, or comfortable with adults. That is personality. It is not the same thing as believing you can receive a ball under pressure with your back to goal.

Where confidence actually comes from

Hays, Maynard, Thomas and Bawden interviewed 14 world-class athletes (7 men, 7 women) for the Journal of Applied Sport Psychology in 2007. They identified nine sources of confidence: preparation, performance accomplishments, coaching, innate factors, social support, experience, competitive advantage, self-awareness, and trust. Only one of the nine is “innate.” The other eight are things that get built over weeks and seasons. They also found differences by gender: the women placed more weight on good personal performances, while the men leaned more on winning.

That lines up with Albert Bandura’s self-efficacy theory, published in Psychological Review in 1977. Bandura argued that performance accomplishments, meaning actually doing the hard thing yourself, are the most dependable source of self-efficacy, ahead of being told you can do it. Pep talks help a little. Proof helps a lot.

The mental side responds to practice too

Hatzigeorgiadis and colleagues pooled 32 studies on self-talk in sport (Perspectives on Psychological Science, 2011). Self-talk interventions had a moderate positive effect on performance (effect size .48). When athletes practiced their self-talk ahead of time instead of being handed a phrase on the day, the effect was larger (.80 vs. .37). Effects were also bigger for new skills and fine-motor tasks.

That is a performance result, not a confidence score. But it makes the same point: what goes on between a player’s ears gets better with deliberate reps, just like a first touch does.

What this means for a nervous player

Do not wait for a kid to feel confident before asking them to do something. That is backwards. Confidence mostly follows evidence, so build the evidence on purpose.

Set up reps where success is likely but not guaranteed, then raise the bar a notch. Make the feedback specific: “you checked your shoulder before the pass came” gives a player something to repeat, while “you’re a natural” gives them a label to protect. Give them one short instruction cue for a skill they are learning, like “eyes up” or “open hips,” and have them practice saying it in training, not just on game day.

Some kids arrive louder than others. A slice of confidence may be temperament. Much of the rest is a record of what a player has watched themselves do. If you want a more confident athlete this season, pick one skill they avoid in games and give them the reps to build that record.