Gripp, R. F. & Magaro, P. A. (1971) A token economy program evaluation with control ward comparisons. Behaviour Research and Therapy, 9, 137–49.
Hall, J. N. (1977) The content of ward rating scales for long-stay patients. British Journal of Psychiatry, 130, 287–93.
Honigfeld, G. & Klett, C. J. (1965) The Nurses' Observation Scale for In-patient Evaluation. Journal of Clinical Psychology, 21, 65–71.
Honigfeld, G., Gillis, R. C. & Klett, C. J. (1966) NOSIE–30: a treatment-sensitive ward behaviour scale. Psychological Reports, 19, 180–2.
Mariotto, M. J. & Paul, G. L. (1974) A multimethod validation of the IMPS with chronically institutionalized patients. Journal of Consulting and Clinical Psychology, 42, 497–508.
Philip, A. E. (1973) A note on the Nurses' Observation Scale for In-patient Evaluation (NOSIE). British Journal of Psychiatry, 122, 595–6.
Philip, A. E. (1977) Cross-cultural study of the factorial dimensions of the NOSIE. Journal of Clinical Psychology, 33, 467–8.
Winer, B. J. (1962) Statistical Principles in Experimental Design.
New York: McGraw-Hill.