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The Notebook · 10 pieces

How children learn to think, in plain words.

Short, visual explainers for parents of 6–11s. What the research actually found, what it does not say, and the one thing worth changing tonight. No listicles, no fear, no affiliate links.

Every claim names its paperEvery claim prints its caveatNothing sponsored, ever
Read this first9 min · 6 sources

Screen time isn’t the problem. Passive screens are.

If you have been counting minutes and feeling like you are losing, here is the reassuring part first: the number you have been counting is one of the weakest predictors in this whole field. The thing that matters is easier to see and easier to change.

Read the pieceGet these weekly
100 squares = everything that moves a young person’s wellbeing
0.4%is screen use — less than one square in a hundred
Orben & Przybylski, Nature Human Behaviour, 2019 · n ≈ 355,000 · self-reported, correlational, teenagers

Everything in the Notebook

10 published · sources named, caveats printed
The gap6 minWhat school measures against what employers actually rankEmployers’ number one core skill is analytical thinking — cited by about 7 in 10 companies, for the third report running.3 sources17 July 2026Development8 minAges 6 to 11, year by year: what actually changes in a child’s reasoningThe years 4 to 12 are the window where reasoning skills respond most reliably to teaching. 6 to 11 sits inside it.4 sources10 July 2026What to say5 minThe one sentence to say when your child gets it wrongThe sentence is “How did you get there?” — asked with genuine curiosity, and asked when they are right as well as wrong.4 sources3 July 2026The evidence7 minCan thinking be taught? 341 studies say yes — and by roughly this muchA meta-analysis of 341 effect sizes found teaching critical thinking works, with an average effect of about 0.30 — modest, real, repeatable.4 sources26 June 2026The one number6 minWhy 8 out of 10 is the right score, and 10 out of 10 is a warningLearning is fastest just below always getting it right. One line of research puts the sweet spot near 85% correct; we hold children at about 80%.4 sources19 June 2026Uncomfortable7 minWhat 30 years of praise research actually showsMindset beliefs correlate with achievement at about r = 0.10 — roughly 1% of the variation, across 365,000 students.4 sources12 June 2026Myth-busting6 minThe marshmallow test was never about willpowerThe 2018 replication used 918 children rather than a few dozen. Each extra minute a 4-year-old waited predicted about 0.1 standard deviations of achievement at 15.4 sources5 June 2026The basics6 minSleep is the study skill nobody assignsChildren aged 6 to 12 need 9 to 12 hours a night, on a regular schedule. Most of the shortfall in families is 30 to 60 minutes, not hours.4 sources29 May 2026How learning sticks7 minWhy children remember what they work out and forget what they’re toldProducing an answer beats receiving one, by a lot, for long-term memory — and learners reliably predict the opposite.4 sources22 May 2026

One short note a week, for parents who’d rather read the paper than the headline

Each Friday: one finding about how children think, in plain words, with its source and its limits. Two minutes to read. Unsubscribe in one click, no dark patterns.

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