DTT is highly structured teaching approach, in which each skill is broken down into smaller units and taught until mastery. The child is given repeated opportunities to learn and practice each step in a variety and each time the child achieves the desired result; highly preferred items and praises are delivered following the correct responses. This approach allows for a fast-paced instruction to increase the number of learning opportunities in a brief period of time.

PRT is a child-directed intervention that focuses on behaviors that affect a wide range of other behaviors. These pivotal behaviors are motivation, response to multiple cues, self-management, self-initiation and social interaction. The goal of PRT is to produce positive changes on one or all of these pivotal behaviors that will lead to broad improvements in communication, play and social behaviors and the child’s ability to monitor his/her own behavior.

VB is a behavioral approach to teaching language skills in which it can be described as a contingency analysis between specific environment-behavior relations and its contingencies of reinforcement. Training programs are broken down into units of language or verbal operants, which are classified by the antecedent and consequent stimuli that control them. Implementing a VB program will teach children to understand that the use of their verbal behavior and will allow them to gain access to the things they want and when they want them.

NET emphasizes on child-directed interaction with the natural environments while being highly structured to increase motivation to respond and generalize skills. NET also emphasizes on increasing parent/caregiver training by promoting teaching opportunities that are naturally occurring throughout the day.

The PECS system is based on ABA and Verbal Behavior using general principles of behavior analysis such as prompting and reinforcement that will lead to independent communication. PECS consist of six phases and it starts with teaching the child to exchange a picture for an object. Eventually, the individual learns to discriminate between pictures and symbols and use these to form sentences. The primary goal of PECS is to teach functional communication.