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Dampened vagal tone predicted pragmatic impairment in ASD, and associations emerged between cardiac activity and receptive\/expressive vocabulary across groups. Findings support autonomic dysfunction as a mechanism underlying pragmatic impairment in ASD and suggest that biophysiological profiles are shared in ASD and FXS, which has implications for understanding the role of fragile X mental retardation-1 (FMR1, the FXS gene) in the pathophysiology of ASD.<\/jats:p>","DOI":"10.1352\/1944.7558-118.6.475","type":"journal-article","created":{"date-parts":[[2014,1,16]],"date-time":"2014-01-16T16:53:19Z","timestamp":1389891199000},"page":"475-495","source":"Crossref","is-referenced-by-count":57,"title":["Physiological Arousal in Autism and Fragile X Syndrome: Group Comparisons and Links With Pragmatic Language"],"prefix":"10.1080","volume":"118","author":[{"given":"Jessica","family":"Klusek","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gary 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