Whether using a tried-and-true methodology or a highly speculative and experimental approach to influencing development, monitoring the change in a person’s behavior needs to be done. This does not mean that you should only use “known” methods. Quite to the contrary — if you know how to monitor change in behavior and collect data that informs about these changes — you are freed to try intuitive and new approaches. Applied Developmental Analysis (ADA) rests on being able to accurately and precisely monitor the change and growth in a person’s behavior. Dr. Weiss and his colleagues are professionals in how to characterize behavior, how to define what is being studied, how to track changes and how to develop experimental approaches to new methods that allows for clarity in what is working, and what is not. This opens the door to intuition and new ideas.