Human development - a question of structure and function, Karola Dillenburger and Michael Keenan private events - a neglected and misunderstood construct in radical behavourism, Ian Taylor and Mark F. O’Reilly ’W’-ing - teaching exercises for radical behaviourists, Michael Keenan what are the reinforcers for cognitivism in behaviour therapy? Kevin J. Tierney and John A. Smith bye-bye behaviour modification, Peter Walsh applied psychology from the standpoint of behavioural analysis, Julian C. Leslie the behavioural self-control of study in third-level students - a review, Samuel D. Cromie and Leo J.V. Baker compliance training as an intervention strategy for anti-social behavoiur - a pilot study, Dermot O’Reilly and Karola Dillenburger assessing challenging behaviour of persons with severe mental disabilities, Mark F. O’Reilly relational frame theory and the experimental analysis of human sexual arousal - some interpretive implications, Dermot Barnes and Bryan Roche rules and rule-governance - new directions in the theoretical and experimental anaysis of human behaviour, Ken P.J. Kerr and Michael Keenan.