25 January 2019

What does the CELF-SST really index?

The Sentence Structure (SS) sub-test of the Clinical Evaluation of Language Fundamentals aims to "measure the acquisition of grammatical (structural) rules at the sentence level". Although not originally intended for use with bilingual children, CELF raw scores are often used to estimate the English proficiency of bilingual children.

One of the most robust predictors of language proficiency in bilinguals is the amount of exposure they have experienced in the language in question. Surprisingly, however, exposure to English did not predict SS scores in a group of 5- to 7-year-old bilinguals, in sharp contrast with other proficiency tests used with the same children. This study queries the reliability of the SS test as an index of children's ability to deal with structural complexity in sentence comprehension, and demonstrates that cognitive complexity acts as a major confound in the task, affecting monolinguals (n =87) and bilinguals (n = 87) alike.

Preprint of the full paper
Poster (Child Language Symposium 2018)