Artful dating: researchers refine techniques to gauge the age of ancient sites

Article Abstract:

Researchers are using accelerator mass spectrometry and advanced carbon-extraction methods to date ancient rock engravings and paintings. The techniques rely on dating microorganisms sealed into the art by the varnish produced by other microorganisms or organic processes.

Innovations, Radiocarbon dating, Art, Prehistoric, Prehistoric art

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Misreading dyslexia: researchers debate the causes and prevalence of the disorder

Article Abstract:

Researchers around the world are divided over the causes and prevalence of dyslexia. While some believe that the disorder has a neurophysiological basis in most patients, others contend that the problem is related more to external factors and postnatal experience.

Causes of, Physiological aspects, Mental illness, Mental disorders, Reading disability, Reading disorders

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Dyslexia

Article Abstract:

A phonological model of dyslexia is discussed. It focuses on language processing as the problematic area. This model accounts for the fact why some individuals who have excellent reasoning and conceptualization abilities are dyslexics.

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