THE STUDIES, PERFORMED WITH 56 IMPRISONED ADULT FELONS, AIMED TO EXPAND THE GENERALITY OF THE USE OF POSITIVE REINFORCEMENT PROCEDURES TO MODIFY UNDESIRABLE BEHAVIOR AND TO IDENTIFY THE FUNCTIONAL RELATIONSHIP BETWEEN MAGNITUDE OF TOKEN REINFORCEMENT AND PERFORMANCE OF A DESIRED ACTIVITY. IN THE FIRST STUDY, A REVERSAL DESIGN WITH A FOLLOWUP COMPONENT INDICATED THAT THE POSITIVE REINFORCEMENT OF RULE FOLLOWING WAS EFFECTIVE IN REDUCING THE OCCURRENCE OF RULE VIOLATIONS AND THAT THE EFFECT OF THE PROCEDURE APPEARED TO BE PARTIALLY IRREVERSIBLE. THE SECOND STUDY USED AN EXPANDED REVERSAL DESIGN TO DETERMINE THE PROGRESSIVE EFFECTS ON PERFORMANCE OF SUCCESSIVE INCREASES IN THE MAGNITUDE OF TOKEN REINFORCEMENT AND TO COMPARE THESE EFFECTS FOR CLIENTS WITH AND WITHOUT A LONG HISTORY OF PARTICIPATION IN A TOKEN ECONOMY. IT WAS FOUND THAT EACH SUCCESSIVE INCREASE IN REINFORCEMENT MAGNITUDE PRODUCED PROPORTIONALLY SMALLER INCREASES IN GROUP PERFORMANCE AND THAT THE EFFECTS WERE MARKEDLY SIMILAR FOR GROUPS WITH DIFFERING HISTORIES OF PARTICIPATION IN THE ECONOMY. WITH THE GOAL OF REENGINEERING THE INSTITUTION WITH THE GOAL OF REENGINEERING THE INSTITUTION ENVIRONMENT BY INTRODUCING EFFECTIVE CONTINGENCIES OF POSITIVE REINFORCEMENT TO REPLACE CONTINGENCIES OF AVERSIVE CONTROL, THE STUDY MOVED THE CELLBLOCK TOKEN ECONOMY TOWARD THE DEVELOPMENT OF A HUMANE-OFFENDER REHABILITATION AND MANAGEMENT SYSTEM. GROUP AND INDIVIDUAL PERFORMANCE RECORDS ARE COMPARED, AND THE MANNER IN WHICH GROUP DATA MAY MASK INDIVIDUAL RESPONSE PATTERNS IS DISCUSSED. REFERENCES ARE PROVIDED. (AUTHOR ABSTRACT MODIFIED--MHP)