2000g-898 2011h-473 autisminchildren autisticchildren autisticdisorder child childdevelopment childhealthservices childrenwithmentaldisabilities childwelfare control developmentaldisabilities developmentallydisabledchildren diagnosis disabledchildren disabledpersons education education(earlychildhood) educational etc etiology handbooks infant learningdisabilities learningdisabledchildren manuals methods peoplewithdisabilities preschool preschoolchildren prevention psychologicaltesting psychologicaltests psychologicaltestsforchildren rehabilitation servicesfor socialconditions socialsupport testing therapy trends unitedstates ws110