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Understanding neurodivergence
Articles based on published research: ADHD, autism, dyslexia, mood, sleep, and what actually helps.
Science
7 min read · 3 Nov 2026
Identical Twins, 15 IQ Points Apart: Genes or School?
Raised apart, identical twins differed by 15 IQ points when their schooling was very different. But the sample is tiny, and a study of German twins stresses the weight of genes. What these studies really show.
Science
7 min read · 19 Sep 2026
Two Kinds of Smart: Why Autism and ADHD Have Opposite Genetic Links With Knowledge and Reasoning
A 2026 study in Nature Communications split intelligence into reasoning, knowledge and speed, then compared their genetics with autism, ADHD, schizophrenia and bipolar disorder. The links go in different directions. A single IQ number hides all of it.
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