A functional analysis (FA) was conducted with Jerry Thompson…

A functional analysis (FA) was conducted with Jerry Thompson and the results of the FA indicated that his physical aggression was maintained by attention.  A preference assessment was conducted, and it appeared that Jerry also would work for tangible toys. Jerry’s aggressive behavior was put on a DRO 5 minutes, or direct reinforcement of other behavior. Every 5 minutes John would get a token, which could be exchanged for toys, if he had not engaged in aggression for that interval. Sometimes, he exchanged his tokens for toys and other times his aggressive behavior delayed the delivery of tokens. Based on this example where a reinforcer not matched to the function behavior is delivered for successful completion of a DRO interval, or withheld for engaging in aggression,  this type differential reinforcement strategy involves combining which two principles of behavior?

You are trying to reduce the disruptive behavior of a presch…

You are trying to reduce the disruptive behavior of a preschool student with autism during group activities. Your plan involves dividing each group activity period into five minute intervals. If at the end of a five minute period he is not being disruptive at that moment, he earns a point. Points are exchangeable at the end of the period for time with a desirable activity. What type of intervention is this?