The Emotional Disturbance Decision Tree (EDDT) family of instruments gives you insight from three distinct viewpoints—teacher ( EDDT ), parent ( EDDT-PF ), and self ( EDDT-SR ). Though each form can be used individually, the full potential of the EDDT family is realized by garnering a trio of perspectives. See the advantages gained by in a case study presented in our new white paper by Jennifer A. Greene, PhD, and EDDT author Bryan L. Euler, PhD. You’ll also get information about the EDDT Multi-Rater Summary Form, a tool that can help you interpret statistically significant discrepancies between raters. Learn more about the EDDT family .