The Oxford CDI includes 416 words, and is laid out suitably for automated scoring. The OCDI Database currently contains responses for 345 children aged 9.5-27.2 months. The graph below shows how the number of words recognized and produced by children changes as a function of children's age. This graph was generated from the OCDI Database by taking a moving average across 20 children. Journal of Child Language.
Lexical knowledge drives infants' visual preferences in the absence of referential input.
This page last updated 29 March 2000 .