• Christine Eiser
Part of the Contributions to Psychology and Medicine book series (CONTRIBUTIONS)


Before the 1950s the consequences of phenylketonuria (PKU) for the child were quite disastrous. Untreated PKU causes mental retardation; some 96% of patients have IQs below 60 (Baumeister, 1967; Knox, 1960). Surveys of the inmates of institutions suggested that 1 in 100 patients had PKU (Langdell, 1965). In addition to mental retardation, the patient with PKU may suffer from seizures and other neurological abnormalities (Allen & Gibson, 1961; Kang, Kennedy, Gates, Burwash, & McKinnon, 1965). Perceptual motor difficulties (Hackney, Hanley, Davidson, & Lindsao, 1968) and autistic behavior (Lowe, Tanaka, Seashore, Young, & Cohen, 1980) have also been reported.


Mental Retardation Unaffected Sibling Unaffected Family Member Phenylalanine Level Strict Diet 
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Copyright information

© Springer-Verlag New York Inc. 1985

Authors and Affiliations

  • Christine Eiser
    • 1
  1. 1.Department of PsychologyUniversity of ExeterExeterEngland

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