1. Concept learning by retarded children: a comparison of three discrimination learning procedures;Aeschlemann;Journal of Mental Deficiency Research,1982
2. Ager A.K 1983 An analysis of learning and attentional processes in mentally handicapped individuals PhD thesis University of Wales
3. Performance contoured programming: a structure for microcomputer-based teaching of individuals with severe learning difficulties;Ager;Programmed Learning and Educational Technology,1986
4. Minimal intervention: a strategy for generalized behaviour change with mentally handicapped individuals;Ager;Behavioural Psychotherapy,1987