Early intervention programs (birth–3 years) Public elementary schools Social communication/pragmatic language disorders Medically complex children Individuals who use augmentative and alternative communication (AAC) Developmental disabilities (e.g., Down syndrome, intellectual disabilities) Toddlers (early language development delays) Preschool-aged children School-aged children Adolescents Speech sound disorders (articulation, phonology) Language disorders (receptive and expressive language delays/disorders) Autism spectrum disorder (ASD) Stuttering and fluency disorders