1. Achenbach TM, and Edelbrock CS (1983) Manual for the Child Behavior Checklist and Revised Child Profile. Burlington VT, Department of Psychiatry University of Vermont
2. Borghgraef M, Fryns JP, and Van den Berghe H (1990) Psychological profile and behavioral characteristics in 12 patients with Prader-Willi Syndrome. Genetic Counseling 38: 141–150
3. Branson C (1981) Speech and language characteristics of children with Prader-Willi Syndrome. In: Holm VA, Sulzbacher SJ and Pipes PL (eds) The Prader-Willi Syndrome. University Park Press, Baltimore, pp 179–183
4. Butler MG (1990) Prader-Willi Syndrome: Current understanding of cause and diagnosis. Am J Med Genet 35: 319–332
5. Butler MG, Meaney FJ, Palmer CG (1986) Clinical and cytogenetic survey of 39 individuals with Prader-Labhart-Willi Syndrome. Am J Med Genet 23: 793–809