Blogs and news stories often note the recent study that concluded that autism rates are dramatically increasing. One in sixty males are now estimated to have autism or Aspergers.
An issue that keeps coming to mind is whether left lefthandedness or ambidexterity is on the rise. This would be a dramatic indicator of the cause of autism. There have been no resent such studies that I am aware of. Left handedness and ambidextrousness or both indicators of “random handedness” or those without a genetic predisposition toward right handedness, people with right cerebral hemispheres that did not experience the degree of cerebral synapse pruning that normal right handers did. These are people with bigger brains. The autistic often have bigger brains.
If autism is on the rise and random handedness is increasing that means maturational delay is increasing. This would be useful information.
