The model of therapy we use is derived from the principles of Applied Behaviour Analysis and the curricula we follow comes from a number of naturalistic-developmental-behavioural programmes (Assessment of Basic Language and Learning Skills-revised – ABLLSr, the Verbal Behaviour Milestones Assessment and Placement Program – VB-MAPP, the Early Start Denver Model – ESDM, Essential for Living – EFL, and the Early Behaviour Intervention Curriculum – EBIC). We focus on changing behaviours through 1:1 discrete trials/table time activities but also in naturalistic activities and using a reinforcement/reward-based approach to encouraging learning and especially focuses on developing play, language, and communication skills.