GlossaryTraining

Improvement area

A skill where your mastery sits clearly below your own overall level, so drilling it pays off most.

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What it means
Improvement areas are your weakest skills measured against yourself, not against a fixed bar. Today shows the weakest one, and Progress lists them all.
How it is calculated
A skill qualifies once it has at least 10 decisions and its mastery score is more than 5% below your overall score. The 3 lowest are listed, weakest first.
Worked example
Your overall score is 78%. Facing a 3-bet sits at 61% over 40 decisions, 17 points below, so it is an improvement area. Late position opens at 76% are within the margin and are not.
Why it matters
Time spent on a skill you already play well moves your results very little. The biggest gains come from the skill furthest below the rest of your game.

See also: Mastery, Path unit, Thin sample