Sentence repetition: what does the task measure?

Area of Science:

• Linguistic development in children
• Clinical linguistics
• Language acquisition

Background:

• Sentence repetition is increasingly used to assess children's language abilities and identify specific language impairment.
• However, the exact linguistic knowledge tapped by these tasks remains debated.

Purpose of the Study:

• To investigate how different types of linguistic knowledge affect immediate sentence recall in young children.
• To assess the age sensitivity of sentence repetition tasks for children aged 4–5 years.
• To determine if these effects are consistent across typologically different languages, specifically English and Czech.

Main Methods:

• 50 English-speaking and 50 Czech-speaking 4–5-year-olds participated.
• Children repeated stimuli across seven conditions, from full sentences to non-words, to measure recall span.
• Linguistic factors manipulated included syntactic correctness, semantic plausibility, prosody, and word familiarity.

Main Results:

• Morphosyntax and lexical familiarity significantly impacted sentence recall spans in both languages.
• Syntactic violations and non-words had the largest negative effect, while semantic implausibility and lack of prosody had smaller effects.
• Function word familiarity was more critical than content word familiarity; effects were consistent across languages and ages (4–5 years).

Conclusions:

• Sentence repetition performance in young children is primarily driven by morphosyntactic and lexical-phonological knowledge, particularly function words.
• These findings confirm the utility of sentence repetition tasks for research and clinical assessment of language abilities, including specific language impairment.
• The cross-linguistic consistency suggests a robust underlying mechanism for sentence processing in early development.