Abstract
This research aims to determine the effectiveness of Differential Reinforcement of Incompatible Behaviour (DRI) to overcome the disruptive behaviour of intellectual disability students in the classroom during lesson. The type of disruptive behaviour, which becomes the target behaviour in this research, is physical aggression against classmates. This research used quantitative approach with experimental research design. The approach for this experimental research is Single Subject Research (SSR) with A-B-A (Baseline-1-Intervention-Baseline-2) design. The subject of the research is three students with intellectual disability in grade II C of SLBN Surakarta, Central Java, Indonesia. The instruments for collecting the data in this research consist of interview, observation, and anecdotal report. The data was analysed by using descriptive statistic and presented in the form of tables and graph. Furthermore, the components were analyzed by an analysis of the condition. The result showed that the frequency of disruptive behaviour of the three students was decrease. There is an alteration occurred in frequency of disruptive behaviour. Based on the fact, it can be concluded that DRI is effective to overcome disruptive behaviour of intellectual disability students. Article visualizations:
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