The purpose of this study is to examine the effectiveness of a 12-week early intervention program that will include 12 weekly hours in an intensive center-based preschool environment or in the home to treat social communication deficits in children with developmental disorders. The study will include children with developmental disorders, such as Autism Spectrum Disorder, neurogenetic disorders, or intellectual disability.

Inclusion Criteria:

• Diagnosis of Developmental Disorder, such as Autism Spectrum Disorder, neurogenetic disorder, or intellectual disability, based on clinical interview;
• Boys and girls between 2.0 years and 5.11 years at time of enrollment;
• Ability to participate in the testing procedures to the extent that valid standard scores can be obtained.

Exclusion Criteria:

• Current or lifetime diagnosis of severe psychiatric disorder (e.g., bipolar disorder, etc.);
• Lack of availability during program hours.