MacArthur-Bates Communicative Development Inventory – III (CDI-III)

Used in both research and clinical settings, these parent report instruments help SLPs and other professionals screen children, develop a prognosis for children with language delays, plan effective intervention, monitor progress, and meet mandates for including parent input in child evaluation.

CDI-III (ages 30 to 37 months). This shorter, single-sheet tool measures expressive vocabulary and grammar It is available in a pack of 25 forms on tablet.

WHAT’S NEW

The third edition of the CDIs includes updated norms, additional tools, and more administration formats and helpful resources. Here’s a look at what’s new:

• Expanded and more representative norms—more than 4,000 new children have been added to the norming dataset for the CDI: Words and Gestures and CDI: Words and Sentences. Norming tables have been statistically adjusted to reflect key U.S. demographic indicators.
• More options for electronic administration of the CDIs, including fillable PDFs and a new web-based administration platform, Web-CDI
• New picture-based instructions with easy-to-understand illustrations and examples
• More extensive administration and scoring guidelines
• More on using the CDIs with bilingual and multilingual children
• An expanded chapter on the CDI-III
• Detailed guidelines about choosing the most appropriate CDI forms when several are potentially useful
• Expanded guidelines on the use of CDI short forms, including new statistically-adjusted norms and information on reliability and validity
• More CDI resources available online, including Wordbank, an open repository of CDI data in 38 languages representing more than 84,000 children
• A rapid, valid Computerized Adaptive scale for expressive vocabulary, now available through Web-CDI
• A helpful list of frequently asked questions