Data collection is a hallmark of effective behavior-analytic therapy. Collecting accurate data permits a behavior analyst to evaluate the effectiveness of behavioral treatment. The current study evaluated the use of a clicker, simplified observation, and a timer to improve accuracy of data collection on a psychiatric unit for children diagnosed with intellectual and developmental disabilities. Experiment 1, conducted within a combined multiple-baseline across-participants and reversal design, was an evaluation to identify an intervention package for four participants employed by the psychiatric unit. Interventions yielding the highest interobserver agreement (IOA) were highly individualized. Thus, we selected the most comprehensive intervention and exposed four additional participants to this intervention during Experiment 2. Results showed that this intervention improved IOA for these additional participants as evaluated within a multiple-baseline across-participants design. Results of the current study will be discussed to assist other behavior analysts in improving data-collection practices in hospital or school settings.
Keywords: Data collection; Interobserver agreement; Psychiatric unit; Staff training.