Angelman syndrome (AS) is a neurogenetic disorder characterized by delays including a severe expressive language delay, motor concerns, ataxia, epilepsy, sleep disturbances, gastrointestinal problems, and characteristic behaviors, including a happy demeanor, hyperactivity, and excitability. The syndrome is one of the first neurodevelopmental…

A home-based interventionist effectively taught four mothers to embed the mand-model procedure in daily activities to teach expressive language skills to their young children with speech delays. During the intervention phase, parents were provided with feedback along with specific encouragement to use the individualized instructional program…