You know that you’ve been successful with a behavior intervention when you make the undesired behavior(s):
irrelevant (so there's no need to do it);
inefficient (so there are easier ways to get what you want); and
ineffective (so the problem behavior(s) no longer work to produce the desired outcome). (Roberts, 2017)
The individual needs to learn either:
A new replacement skill, or
A more effective version of a skill they already have
The replacement skill must be:
Easier than the problem behavior
Faster than the problem behavior
Reliable in getting the need met
Reinforced consistently by staff
More socially appropriate and acceptable
For example, if the individual yells or refuses when overwhelmed, staff can reduce triggers and respond calmly. However, long-term progress requires teaching the person how to request a break, ask for help, signal discomfort, or tolerate a delay.