The first intervention may be changed in intensity; that is, either more or less of it may be used, as appropriate. Or the criterion of what is acceptable performance may be changed; that is, more or...

The first intervention may be changed in intensity; that is, either more or less of it may be used, as appropriate. Or the criterion of what is acceptable performance may be changed; that is, more or less of a client’s performance is now required to obtain the same intervention (such as positive reinforcement). The notation for changing intensity is A-B1 -B2 .