Recent research on the etiologies of autism

Despite active research on multiple fronts, the etiology of autism is still unclear. Molecular genetic studies, including research into neurochemical receptors and genetic linkages, hold promise for the future. Active researc h interest continues in the disciplines of neuroelectrophysiology, histolog y, neuroanatomy, and neuroradiology. Ongoing clinical research continues re garding neurophysiologic factors and the definition of a broader autism phe notype.