Short-form versions of the MacArthur Communicative Development Inventories

The MacArthur Communicative Development Inventories (CDIs) are a pair of wi dely used parent-report instruments for assessing communicative skills in i nfants and toddlers. This report describes short-form versions of the CDIs and their development, summarizes newly available normative data and psycho metric properties of the instruments, and discusses research and clinical a pplications. The infant short farm (Level I, for 8- to 18-month-olds) conta ins an 89-word checklist for vocabulary comprehension and production. The t wo parallel versions of the toddler short form (Level II, Forms A and B, fo r 16- to 30-month-olds) each contain a 100-word vocabulary production check list and a question about word combinations. The forms may also be useful w ith developmentally delayed children beyond the specified age ranges. Copie s of the short forms and the normative tables appear in the appendices.