Behaviour modification refers to the techniques used to try and decrease or increase a particular type of behaviour or reaction. This might sound very technical, but it is used very frequently by all of us. Parents use this to teach their children right from wrong. Therapists use it to promote healthy behaviours in their patients. The purpose behind behaviour modification is not to understand why or how a particular behaviour started. Instead, it only focuses on changing behaviour, and there are different methods used to accomplish it.