Pivotal Response Treatment for Individuals With Intellectual Disabilities

Inclusion Criteria for Individuals with Intellectual Disabilities:

- Participants will have an age range between 2 and 17.11 years of age inclusive

- Male or female

- Diagnosis of an intellectual disability based on the fourth edition of the Diagnostic
and Statistical Manual of Mental Disorders (DSM-IV-TR), the 10th revision of the
International Statistical Classification of Diseases and Related Health Problems
(ICD-10), and an expert clinical evaluation

- have historical evidence of significant abnormal developmental milestones as
determined by neurological history

- care provider that will reliably bring subject to study visits, and is trustworthy to
provide accurate accounts of services provided to the subject

Inclusion Criteria for Individuals with Speech Delay/Language Disorder:

- Participants will have an age range between 2 and 17.11 years of age inclusive

- Male or female

- Diagnosis of a speech delay based on the fourth edition of the Diagnostic and
Statistical Manual of Mental Disorders (DSM-IV-TR), the 10th revision of the
International Statistical Classification of Diseases and Related Health Problems
(ICD-10), and an expert clinical evaluation

- Preschool Language scale (PLS) score of at least 1 standard deviations below age level
(for children in the age range of 2-6.11)

- care provider that will reliably bring subject to study visits, and is trustworthy to
provide accurate accounts of services provided to the subject

Exclusion Criteria:

- medically unstable (such as having unstable seizures)

- primary diagnosis of Autism Spectrum Disorder (ASD) is exclusionary as determined by
the investigators