Parent-Reported Outcome Measures for Individuals with Fragile X Syndrome: Clinically Meaningful Change Thresholds. - Nelson MA; Schmitt LM; Horn PS; Berry-Kravis E; Hessl D; Shaffer RC; Carpenter R; Budimirovic DB; Wang P; Reisinger DL; Walton-Bowen K; Erickson CA (Journal of autism and developmental disorders, 2026)