What is collecting A-B-C data commonly referred to as?

Collecting A-B-C data is commonly referred to as first-hand observation because it involves direct observation of a student’s behavior and the context in which it occurs. A-B-C stands for Antecedent-Behavior-Consequence, which allows the observer to record specific events leading up to the behavior, the behavior itself, and the consequences that follow. This method provides valuable insights into the function of the behavior, enabling practitioners to develop effective interventions based on firsthand evidence rather than relying on reports or interpretations from others. First-hand observation is essential for data accuracy and developing a comprehensive understanding of a child's behavioral patterns.