# The Longitudinal Development of Grammatical Complexity at the Phrasal and Clausal Levels in Spoken and Written Responses to the <i>TOEFL iBT®</i> Test

> Research article (ETS Research Report Series, 2019) · cited 12× · AI/ML

**Wikidata**: [openalex:W2994886350](https://www.wikidata.org/wiki/openalex:W2994886350)  
**Source**: https://4ort.xyz/entity/the-longitudinal-development-of-grammatical-complexity-at-the-phrasal-and-clausal-levels-in-spoken-and-written-responses