Let the PDDBI: Autism Spectrum Disorder Decision Tree (ASD-DT) help you find the way when navigating the challenging path of a possible autism spectrum disorder diagnosis . Using scores from the PDDBI Extended Form, the ASD-DT leads you toward a diagnostic category that can help identify an ASD subgroup or a non-ASD diagnosis . The ASD-DT and the PDDBI provide a standardized measure to help you work through many possibilities to provide precise intervention recommendations. The ASD-DT can be purchased on its own or as part of the PDDBI Comprehensive Kit. Learn more today!