Applied Behavior Analysis (ABA) interventions/programs are data based and research driven. Therefore, when conducting ABA interventions & programs, data is continuously collected on the targeted behaviours. This allows those running the programmes to evaluate the efficacy of the teaching and treatment implementation on an on-going basis. This data could be the percentage of correct spellings in a test, or the amount of requests made by a student to take a break from work, or the amount of time a student spends out of his seat in a classroom.

The types of data that can be collected are numerous but the purpose of collecting data is to allow those running the interventions to ‘maintain direct and continuous contact with the behaviour under investigation’ (Cooper, et al. 2007, p. 127). Regardless, of the specific target behaviours, specific data-collection procedures are utilized, including visual displays, such as, graphs or charts.