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Quickly identifies children at-risk for an Autism Spectrum Disorder.

31116 PDD Behavior Inventory-Screening Version (PDDBI-SV)
31116R PDDBI-SV Rating Forms, Pk/50
31116-CK PDDBI-SV Combination Kit


Quickly identifies children at-risk for an Autism Spectrum Disorder.
Physician reimbursement for PDDBI-SV

Ira Cohen, Ph. D.

  • Age Range: 1.6-12.5 years
  • Time: 5-10 minutes
  • Restricted Use: Level B or S

A rapid screening tool, the PDDBI-SV identifies Pervasive Developmental Disorder (PDD) as defined in the DSM-IV-TR. It can be completed by parents or caregivers, and covers a wide spectrum of adaptive and maladaptive behaviors, and is useful in multiple applications.

The PDDBI-SV items assess non-vocal, social problem behaviors typically reported in children with Autism, as well as social behaviors that are present in typically-developing children, but are absent, delayed or occurring at a much lower rate in children with Autism Spectrum Disorders (ASD).


  • To provide a rapid screening tool to aid in diagnosis of possible ASD
  • To be useful for a younger age than offered by other instruments
  • To cover a wide range of adaptive and maladaptive behaviors
  • To provide a standardized score for an estimate of degree of severity,
    as well as a degree of confidence
  • To be  useful for multiple applications

The PDDBI-SV’s Social Deficit Score (SOCDEF) measures both the presence of inappropriate social behaviors, and the absence of appropriate social behaviors.  The PDDBI-SV classwifies the SOCDEF score into one of six levels of severity.  A suspect SOCDEF score indicates that a more in-depth assessment should be undertaken.

Standardization, Reliability and Validity
The standardization sample included 369 parent ratings for children in the Autism Spectrum, ranging in age from 1 year, 6 months to 12 years, 5 months.  Children were diagnosed with the ADI-R (Stoelting Cat. No. 32895) and ADOS-G.  Internal consistency alpha was .87, in the upper end of the moderate range.  

Sensitivity, specificity, positive predictive validity, and negative predictive validity of two groups (an ASD group and a normal group) were examined to investigate diagnostic validity.  ROC analyses resulted in an AUC of .96, with a 95 per cent confidence interval of .92 to .99.

PDDBI-SV Software Portfolio Available
The PDDBI-SV:SP provides a brief interpretive report to help analyze client SOCDEF scores, and determine whether further testing is appropriate. Requires Windows XP/Vista/7; NTFS file system; CD-ROM drive for installation; Internet connection or telephone for software activation.
The PDDBI-SV Kit includes a Manual and 50 Rating Forms. The PDDBI-SV Combination Kit includes the PDDBI-SV Kit and PDDBI-SV:SP Software.