Explore the evidence
2 of 88 decisions · clear everything
Survives the gold standardIndependent, durable, rigorousThe debunked shelfCheap winsFor parents at homeFamous numbers, deflatedWhere we admit ignoranceThe terrain
confidence
Your situation · from the applicability layer — absence means “not yet assessed,” never “doesn’t apply”
who's delivering
- nothing assessed yet
group / setting
- nothing assessed yet
cost
- nothing assessed yet
outcome class
- nothing assessed yet
Early gains fade by default — halving every 12–18 months, faster when bigger. What persists is trajectory (placement, graduation), not ability.
strong supportconf: highgc: low10/1048/48connected:Does working-memory or brain trainDoes learning to code improve geneCan executive function be trained,Does teaching a growth mindset rai+2
Fadeout — why early gains disappear, and what actually persists · early-childhood · ages 4–18 · structure
Teacher quality is the largest within-school lever — 1 SD of teacher ≈ 0.10–0.15 SD/yr, worth more than ten fewer students — and credentials predict none of it. Select; don't workshop.
strong supportconf: highgc: lowTeacher quality — selection over credentials and workshops · teachers · ages 4–18 · structure
The URL is the state — any view you build here is a permalink you can hand to someone mid-argument.