Baker, R. (1971). The use of operant conditioning to reinstate speech in mute schizophrenics. Behaviour Research and Therapy 9, 329–336.
Barton, E. S. (1975). The problem of generalisation in the operant conditioning of social speech in the severely subnormal. British journal of Psychiatry 127, 376–385.
Cliffe, M. J. (1974). Reinstatement of speech in mute schizophrenics by operant conditioning. Acta Psychiatrica Scandinavica 50, 577–585.
Hewlett, J. M. (1965). Teaching speech to an autistic child through operant conditioning. American Journal of Orthopsychiatry 35, 927–936.
Holland, A. I. and Harris, A. B. (1968). Aphasia and rehabilitation using programmed instructions: an intensive case history. In Operant Procedures in Remedial Speech and Language Training. Sloane, H. M. and Macauley, B. D. (Eds), Boston: Houghton Mifflin.
Isaacs, E., Thomas, J. and Goldiamond, I. (1960). Application of operant conditioning to reinstate verbal behaviour in psychotics. Journal of Speech and Hearing Research 25, 8–12.
Liberman, R. P. (1972). Reinforcement of social interaction in a group of chronic mental patients. In Advances in Behavioural Therapy, Rubin, R. P., et al. (Eds), New York: Academic Press.
Lovaas, O. I. et al. (1966). Acquistion of imitative speech by schizophrenic children. Science 151, 705–707.
Presly, A. S. et al. (1976). The token economy in the National Health Service: possibilities and limitations. Acta Psychiatrica Scandinavic 53, 25–270.
Risley, T. and Wolf, M. (1967). Establishing functional speech in echolalic children. Behaviour Research and Therapy 5, 73–88.
Sherman, J. A. (1965). Use of reinforcers and imitation to reinstate verbal behaviour in mute psychotics. Journal of Abnormal Psychology 70, 155–164.
Straughan, J. H., Potter, W. R. and Hamilton, S. J. (1965). The behavioural treatment of an elective mute. Journal of Child Psychology and Psychiatry 6, 125–130.
Thomson, N., Fraser, D. and McDougall, A. (1974). The reinstatement of speech in near mute chronic schizophrenics by instructions, imitative prompts and reinforcement. journal of Behavioural Therapy and Experimental Psychiatry 5, 83–89.
Walker, H. M. and Buckley, N. K. (1972). Programming generalisation and maintenance of treatment effects across time and across settings. Journal of Applied Behaviour Analysis 5, 209–224.