Letters to the Editor

Fisher S. , Cole J. , Rickels K. , & Uhlenhuth E. (1964) Neuropsychopharmacology 3, 149

Guilford J.P. (1956) Fundamental Statistics in Psychology and Education. McGraw-Hill, New York

Howitt J.W. , & Stricker G. (1965) Journal of the American Dental Association 70, 70

Lindquhist E.F. (1953) Design and Analysis of Experiments in Psychology and Education. Houghton-Mifflin, Boston

Lindsay S.J.E. (1977) An Evaluation of Nitrous Oxide Sedation in Child Dental Patients. MSc Thesis, University of Surrey, Guildford

Lindsay S.J.E. , & Roberts G.J. (1979) British Dental Journal 147, 206 (1980) Methodology for Behavioural Research on Dentally Anxious Children: The Example of Relative Analgesia British Dental Journal (in press)

Rachman S.J. , & Hodgson R. (1974) Behaviour Research and Therapy 12, 311