Deliberate practice and guitar speed
Deliberate practice means working on a specific weakness, with clear goals and feedback, just beyond what you can already do. It's very different from playing songs you already know. The research behind it is about musicians in general, not guitar speed, but the core idea holds up well: focused reps beat hours of noodling.
The paper
Ericsson, K. A., Krampe, R. T., & Tesch-Römer, C. (1993). The role of deliberate practice in the acquisition of expert performance. Psychological Review, 100(3), 363–406.
What it found
Ericsson and colleagues argued that expert performance is tied to accumulated deliberate practice: tasks with clear goals, feedback and effort just beyond current skill. Repeating already-easy material didn't count the same way. Violinists and other musicians reported their practice histories, and the top performers reported more time spent on solitary, structured practice.
What it doesn't prove
- It's correlational and based on self-reported practice, not a controlled experiment on guitarists.
- Later research found that practice hours explain only part of the difference between players. Starting age, genetics and other factors matter too.
- The "10,000 hours" rule is a popularization, not a finding.
- It doesn't prove any specific metronome routine is "scientifically proven". Ours isn't either.
How to use it on guitar
This is our interpretation, not a research finding:
- Find the exact spot that breaks, like a string change, a mute or a late finger.
- Work it just below the tempo where it falls apart.
- Get feedback by recording yourself.
- Stop when your form starts to go.
That's the basis of building speed without tension and the 1-bar metronome routine.