↑Dobbs, David (July 8, 2007). "The Gregarious Brain.". New York Times. สืบค้นเมื่อ 2007-09-25. "If a person suffers the small genetic accident that creates Williams syndrome, he’ll live with not only some fairly conventional cognitive deficits, like trouble with space and numbers, but also a strange set of traits that researchers call the Williams social phenotype or, less formally, the “Williams personality”: a love of company and conversation combined, often awkwardly, with a poor understanding of social dynamics and a lack of social inhibition."
↑Martens MA, Wilson SJ, Reutens DC (2008). "Research Review: Williams syndrome: a critical review of the cognitive, behavioral, and neuroanatomical phenotype". J Child Psychol Psychiatry49 (6): 576–608. PMID18489677. doi:10.1111/j.1469-7610.2008.01887.x.