This document summarizes research on neuro-linguistic programming (NLP) in 3 areas: 1. Early NLP research from the 1980s explored eye accessing cues and representational systems but the basic tenets of NLP have failed verification in most controlled studies. 2. Several studies found NLP techniques like anchoring and visualization helped reduce symptoms of PTSD and behavioral issues in children. 3. While NLP claims to be therapeutic, its principles have not been conclusively demonstrated through rigorous research and its evidence base remains limited. Further testing is still needed to establish NLP as a proven clinical approach.