The effectiveness of the method of contrasted role-plays on the acquisition and generalisation of selected assertion skills of lower functioning adult incarcerated offenders. Psychotherapy May 2021 View Journal Publication Full Citation Hollis, A. R. (1985). The effectiveness of the method of contrasted role-plays on the acquisition and generalization of selected assertion skills of lower functioning adult incarcerated offenders. Dissertation Abstracts International, 45(12-B, Pt 1), 3942-3943. Retrieved from http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=reference&D=psyc2&NEWS=N&A… Abstract No available abstract.