This informant-based rating scale is designed to assist in the assessment of children who have been diagnosed with a pervasive developmental disorder (PDD) as defined by the DSM-IV™.
Features and benefits
- Unlike existing assessments for autism/PDD, the PDDBI was developed to assess both problem behaviors as well as appropriate social, language, and learning/memory skills.
- Age-standardized scores for parent and teacher ratings are provided.
- The standard set of items is appropriate if the primary concerns are specifically related to autism (e.g., whether treatment is specifically affecting targeted behaviors).
- The extended set of items—available on both parent and teacher rating forms—is appropriate when you want to assess aspects of the child’s behaviors beyond those specifically associated with autism (e.g., fear and aggression); these may be relevant in the determination of placement and treatment recommendations.
- Standardization sample consisted of 369 parents and 277 teachers of children with well-defined autism from a range of racial/ethnic backgrounds and geographic regions.
- Test-retest stability for the teacher ratings ranged from .65 to .99 over an average 2-week interval. For the parent sample, test-retest stability ratings ranged from .38 to .91 over a 12-month interval.
- Concurrent validity was assessed through comparison with the Childhood Autism Rating Scale, the Nisonger Child Behavior Scales, the Vineland Adaptive Behavior Scales, and the Griffiths Mental Development Scales.
- Clinical validity was assessed through comparison with the ADI-R, the ADOS-G, and the Vineland Adaptive Behavior Scales.
Scoring software available
The unlimited-use PDDBI-SP generates a Score Report after demographic and item response information is hand-entered from a completed standard or extended parent or teacher rating form. The Score Report includes client information, a domain/composite score summary table, a discrepancy score summary table, a repeated assessment score summary table, a cluster score summary table, the individual’s profile, and an item response table.