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1
Statistical Profiling of Academic Oral English Proficiency based on an ITA Screening Test
Choi, Ick Kyu. - : eScholarship, University of California, 2013
Abstract: At the University of California, Los Angeles, the Test of Oral Proficiency (TOP), an internally developed oral proficiency test, is administered to international teaching assistant (ITA) candidates to ensure an appropriate level of academic oral English proficiency. Test taker performances are rated live by two raters according to four subscales. While the subscale scores have potential as valuable feedback to major stakeholders, only a weighted average of the four subscale scores are currently reported and used. This study presents a way of extracting valuable information from the TOP subscale scores. In particular, it investigates an approach to obtaining oral English proficiency profiles based on the subscale score patterns of 960 TOP test takers. This study utilized item response theory and finite mixture modeling to investigate profiles of academic oral English proficiency in terms of the TOP subscales. A higher-order generalization of the graded response model was formulated to estimate subscale scores that accounted for structural dependencies and rater effects in the observed TOP scores. The estimated scores were clustered using a multivariate normal mixture model to yield subscale score profiles. The mixture model suggested seven profile groups and classified the TOP test takers into the seven groups. The profile groups were then interpreted and labeled based on characteristic score patterns and linguistic background shared by group members.To achieve a thorough understanding of the resulting profiles, discourse features of test taker performances sampled from different profile groups were closely examined. A small corpus was constructed based on the sampled test taker performances and compared to a reference corpus to explore the overall pattern of TOP test takers' language use. The comparison showed that the TOP test takers tended to use relatively fewer function words than speakers in the reference corpus. Characteristic features of each profile group's discourse were investigated through an identification and examination of discourse organizing lexical bundles. The results suggested that the use of metadiscourse and textual reference bundles with an explicit past reference point might be related to test takers' academic oral English proficiency.
Keyword: Educational tests & measurements; finite mixture model; Foreign language instruction; international teaching assisstants; item response theory; learner corpus; Linguistics; oral proficiency tests
URL: https://escholarship.org/uc/item/0s15f584
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2
Statistical Profiling of Academic Oral English Proficiency based on an ITA Screening Test
Choi, Ick Kyu. - : eScholarship, University of California, 2013
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3
Modeling Speaker Proficiency, Comprehensibility, and Perceived Competence in a Language Use Domain
Schmidgall, Jonathan Edgar. - : eScholarship, University of California, 2013
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4
Review of Pearson Test of English Academic: Building an assessment use argument
In: Language testing. - London : Sage 29 (2012) 4, 603-619
OLC Linguistik
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5
Justifying the Use of a Second Language Oral Test as an Exit Test in Hong Kong: An Application of Assessment Use Argument Framework
Jia, Yujie. - : eScholarship, University of California, 2012
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6
Weighting Patterns and Rater Variability in an English as a Foreign Language Speaking Test
Cai, Hongwen. - : eScholarship, University of California, 2012
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7
Weighting Patterns and Rater Variability in an English as a Foreign Language Speaking Test
Cai, Hongwen. - : eScholarship, University of California, 2012
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8
An investigation of four writing traits and two tasks across two languages
In: Language testing. - London : Sage 27 (2010) 2, 213-234
BLLDB
OLC Linguistik
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9
Language assessment in practice : developing language assessments and justifying their use in the real world
Bachman, Lyle F.; Palmer, Adrian. - Oxford [u.a.] : Oxford Univ. Press, 2010
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UB Frankfurt Linguistik
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10
Statistical analyses for language assessment workbook and CD-ROM
Kunnan, Antony John; Bachman, Lyle F.. - Cambridge [u.a.] : Cambridge Univ. Press, 2005
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UB Frankfurt Linguistik
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11
Statistical analyses for language assessment
Bachman, Lyle F.. - Cambridge [u.a.] : Cambridge Univ. Press, 2004
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UB Frankfurt Linguistik
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12
Statistical analyses for language assessement
Bachman, Lyle F.. - : Cambridge University Press, 2004
IDS Bibliografie zur Gesprächsforschung
13
Some reflections on task-based language performance assessment
In: Language testing. - London : Sage 19 (2002) 4, 453-476
OLC Linguistik
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14
Interpretations, intended uses and designs in task-based language assessment
Norris, John Michael (Hrsg.); Elder, Catherine (Mitarb.); Iwashita, Noriko (Mitarb.)...
In: Language testing. - London : Sage 19 (2002) 4, 337-496
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15
Articles - Modern language testing at the turn of the century: Assuring that what we count counts
In: Language testing. - London : Sage 17 (2000) 1, 1-42
OLC Linguistik
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16
Modern language testing at the turn of century : assuring that what we count counts
In: Language testing. - London : Sage 17 (2000) 1, 1-42
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17
Validation in language assessment : selected papers from the 17th Language Testing Research Colloquium, Long Beach
Brown, Annie (Mitarb.); Bachman, Lyle F. (Vorw.); Kenyon, Dorry Mann (Mitarb.). - Mahwah, NJ : Erlbaum, 1998
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UB Frankfurt Linguistik
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18
Interfaces between second language acquisition and language testing research
Bachman, Lyle F. (Hrsg.). - Cambridge : Cambridge Univ. Press, 1998
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UB Frankfurt Linguistik
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19
A latent variable approach to listening and reading: Testing factorial invariance across two groups of children in the Korean-English Two-Way Immersion Program
In: Language testing. - London : Sage 15 (1998) 3, 380-414
OLC Linguistik
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20
A latent variable approach to listening and reading : testing factorial invariance across two groups of children in the Korean/English two-way immersion program
In: Language testing. - London : Sage 15 (1998) 3, 380-414
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