TheOxfordHandbookofDownSyndromeandDevelopmentcomprisescutting-edgeandprovocativeintegrativereviewsofessentialtheoryandresearchaboutpersonswithDownsyndromeatvariousstagesofthelifespan.ThevolumeopenswithabriefsectiononhistoricandcontemporaryscientificapproachestounderstandingthedevelopmentofpersonswithDownsyndromewithsubsequentsectionsonsocialdevelopmentandfamilyrelations,cognitionandneuropsychology,andcomorbidconditions.Togetherthesechaptersprovideextensivebackgroundthatleadstoacomprehensiveunderstandingofthedevelopmentandwell-beingofpersonswithDownsyndromeacrossmanydifferentaspectsofeverydayliving.Thefinalsectioncontainsinnovativeandforward-lookingchaptersoninterventionsanddirectionsforfutureresearch.ThecontributorstoallthesechaptersareleadingscholarsinthestudyofpersonswithDownsyndromeandotherneurodevelopmentalconditions.However,thefinalwordofthevolumeislefttothosewithlivedexperience-personswithDownsyndromeandtheirfamilymemberswhoshareandreflectontheirlifestories.ThishandbookisessentialreadingforallthoseinterestedinthedevelopmentofpersonswithDownsyndrome.