People with ASD are **3.5x more likely to be non-right-handed** than the general population. | Handedness | ASD rate | Typical rate | Multiplier | |------------|----------|-------------|-----------| | Non-right-handed (total) | ~45% | ~10% | 3.5x | | Left-handed specifically | ~18% | ~7% | 2.5x | | Mixed-handed | ~36% | ~16% | 2.3x | The pattern is interpreted as a behavioral marker of **reduced hemispheric lateralization** — both ASD and left-handedness reflect less rigid left-hemisphere dominance for language and motor functions. ## Cross-Domain Applications **Neurodevelopmental screening**: Non-right-handedness in children may signal atypical lateralization warranting ASD assessment. **Personal self-understanding**: For an ASD + left-handed individual, both traits point to the same underlying brain organization — more bilateral, more individual, less "standard-issue" lateralization. ## References [[ASD and Left-Handedness]] · [[Reduced Hemispheric Lateralization in ASD]]