The PDDBI is a rating scale that provides a complete picture of a child’s functioning in areas typically affected by PDD- communication, reciprocal social interaction, ritualistic activities and learning skills. Information gained can be used to assist in planning treatment, monitoring progress, assessing outcome, and placement decisions. Administration time ranges from 20 to 45 minutes. The PDDBI is designed for individuals ranging from 1 year 6 months through 12 years 5 months. (Requires special credentials to access - Level 2.)