Children who may perform within their appropriate age range on test instruments, but whose patterns of development are different from their peers.
- Atypical sensory-motor development, such as muscle tone, reflex or postural reaction/ responses, oral-motor skills and sensory integration
- Atypical language or cognition, such as state regulation, attention span, perseveration, information processing, learning & memory, preverbal or presymbolic patterns, symbolic or representational thought
- Atypical emotional or social patterns which may involve, but are not limited to social responsiveness, affective development, attachment patterns, and self-targeted behaviors