The ABC Data Checklist, or Antecedent-Behavior-Consequence Data Checklist, is a crucial tool in the field of behavior analysis and psychology. It serves as a systematic way to gather and organize information about behavior patterns, making it easier to understand and address various behavioral issues. This checklist is invaluable for professionals and caregivers dealing with individuals with behavioral challenges. Below is a list of essential items to include in an ABC Data Checklist: