Test of Early Grammatical Impairment

The Test of Early Grammatical Impairment (TEGI) is a standardized test of grammatical ability. It includes probes that require the child to produce English words in sentences with target grammatical morphemes. For the identification of language impairment on this website, only the scores from the TEGI Screening Test are used. The Screening Test consists of three sub-tests from the TEGI:

  • The Phonological Probe is used to verify that children are capable of producing the word-final consonants that are being tested.
  • The Third Person Singular Probe tests children's ability to produce –s, as in she plays and he sings.
  • The Past Tense Probe tests children's ability to produce regular and irregular past tense forms, as in he played and she gave.

For each of these probes, the child describes pictures using certain grammatical forms that are elicited through specific prompts. A Screening Test score is calculated by combining results of both probes.

The TEGI Screener Pack can be downloaded from https://cldp.ku.edu/rice-wexler-tegi

Administering the TEGI Screening Test takes approximately 10-15 minutes. This includes writing down a child’s responses. An additional 10-15 minutes is required for scoring and calculating scores.


Rice, L. & Wexler, K. (2001). Test of Early Grammatical Impairment. United States: The Psychological Corporation: A Harcourt Assessment Company.