NotesFAQContact Us
Search Tips
Peer reviewed Peer reviewed
PDF on ERIC Download full text
ERIC Number: EJ1111623
Record Type: Journal
Publication Date: 2007-Feb
Pages: 88
Abstractor: As Provided
ISSN: EISSN-2330-8516
Toward an Understanding of the Role of Speech Recognition in Nonnative Speech Assessment. TOEFL iBT Research Report. TOEFL iBT-02. ETS RR-07-02
Zechner, Klaus; Bejar, Isaac I.; Hemat, Ramin
ETS Research Report Series, Feb 2007
The increasing availability and performance of computer-based testing has prompted more research on the automatic assessment of language and speaking proficiency. In this investigation, we evaluated the feasibility of using an off-the-shelf speech-recognition system for scoring speaking prompts from the LanguEdge field test of 2002. We first established the level of agreement between two trained scorers. We then adapted a speech engine to the language backgrounds and proficiency ranges of the speakers and developed a classification and regression tree (CART) for each of five prompts based on features computed from the output of the speech recognizer. In a validation on held-out data, we found that while our features are not sufficiently comprehensive to adequately score these prompts, collectively these features appear to capture reliably some aspects of speaking proficiency.
Educational Testing Service. Rosedale Road, MS19-R Princeton, NJ 08541. Tel: 609-921-9000; Fax: 609-734-5410; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Test of English as a Foreign Language
Grant or Contract Numbers: N/A