Applied Behavior Analysis (ABA) is a technique used to change behaviors through reinforcement and modification of environmental factors. Studies have shown ABA to be effective in improving skills and reducing problematic behaviors for individuals with autism when applied early on. However, some argue ABA follows a "cookbook" approach and does not account for each child's individual needs and experience of autism. Effective ABA requires training parents to understand their child's behaviors and needs to develop personalized intervention plans rather than relying on statistics.