1. Beck AT, Ward CH, Mendelson M, Mock J, Erbaugh J (1961) An inventory for measuring depression. Arch Gen Psychiatry 4:561–571
2. Birrell J, Frost GJ, Parkin JM (1983) The development of children with congenital hypothyroidism. Dev Med Child Neurol 25:502–511
3. Classification of occupations: National Report on Great Britain HMSO (1981) Registrar General OPCS (1970)
4. Dussault JH, Letarte J, Glorieux J, Morissette J, Guyda H (1980) Psychological development of hypothyroid infants at age 12 and 18 months; experience after neonatal screening. Neonatal Thyroid Screening, Raven Press, New York, pp 271–276
5. Eysenck HJ, Eysenck SBG (1975) Manual of the Eysenck personality questionnaire. Hodder and Stoughton, Sevenoaks, England