Adaptations of the CDIs have been developed in a number of languages other than English. Norms are available in some of these languages. For information on CDI adaptations in other languages, click on the link below:

CDIs in other Languages

The CDI instruments are copyrighted and creation of new adaptations of these instruments in other languages requires permission of the CDI Advisory Board.

The CDI Advisory Board has formulated guidelines for obtaining authorization for adaptations of the CDIs into other languages. These guidelines are described at:

Guidelines for the Adaptation of the CDIs

If permission is granted, developers of prospective new CDI adaptations should review the following reference:

Dale, P.S., Fenson, L., and Thal, D. (1993). Some suggestions for the adaptation of the MacArthur Communicative Development Inventories to additional languages. Unpublished manuscript.

Suggestions for Adapting the CDI to Other Languages

For further information, please contact Philip Dale at dalep@unm.edu.

Authors of CDIs in other languages are encouraged to advise Larry Fenson when new data or new manuscripts become available so the website can be updated.