Why is it important to be consistent?

Learning occurs through a history of reinforcement.  If a response receives reinforcement every time the behavior is exhibited, in all environments, by all people, it will have a much stronger history of reinforcement.  It will be learned much quicker and will be more resistant to being “unlearned”.  Consistency in the way something is taught is very important as well.  Imagine being taught three different ways to tie your shoes before you had mastered one way.  It could understandably be very confusing.