DR interventions are structured versions of "catching ‘em being good".  Instead of punishing the "bad behavior" to decrease it's occurrence, you get rid of it by using positive reinforcement in a structured manner.   Depending on the procedure selected, you will be "differentially reinforcing" (rewarding under certain conditions)   [1]the decrease in frequency of an inappropriate behavior (DRL),  [2] the absence of the undesired behavior during a designated time period (DRO),   or   [3] the substitution of a more appropriate behavior in place of the inappropriate one (DRI).  The approaches are positive in nature in that we find ways to use rewards to motivate youngsters to behave better (instead of punishing them for their present ways).   While punishments can be combined with these procedures to create a more powerful change program, DR procedures are often used without punishment procedures accompanying them.