Výsledky vyhledávání - "Robert F. Boldt"

SURVEY OF STANDARDS FOR FOREIGN STUDENT APPLICANTS

Autor: Robert F. Boldt, Rosalea Courtney

Publikováno v: ETS Research Report Series. 1997:i-21

This project consisted of a survey of practices and standards in the use of the Test of English as a Foreign Language (TOEFL®) and attempted to learn the processes by which these standards were developed. By “standards” we mean the information a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a9500de0cab926a0ab3111e75328bdb3
https://doi.org/10.1002/j.2333-8504.1997.tb01728.x

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USING A NEURAL NET TO PREDICT ITEM DIFFICULTY

Autor: Roy Freedle, Robert F. Boldt

Publikováno v: ETS Research Report Series. 1996:i-19

Several studies that attempted to predict item difficulty using linear weighted composites have been done at ETS and elsewhere. The variables in the composites were coded item characteristics. The validity of these predictions was evaluated using mul

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b71b4626eb0ee7fb51ac76dcc94cbfa0
https://doi.org/10.1002/j.2333-8504.1996.tb01709.x

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MULTIMETHOD CONSTRUCT VALIDATION OF THE TEST OF SPOKEN ENGLISH

Autor: Philip K. Oltman, Robert F. Boldt

Publikováno v: ETS Research Report Series. 1993:i-21

Administration of the Test of Spoken English (TSE) yields tapes of oral performance on items within six sections of the test. Trained scorers subsequently rate responses using four proficiency scales: pronunciation, grammar, fluency, and overall comp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fd95e33acca4ef96f5abe171f9e148ab
https://doi.org/10.1002/j.2333-8504.1993.tb01569.x

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SIMULATED EQUATING USING SEVERAL ITEM RESPONSE CURVES

Autor: Robert F. Boldt

Publikováno v: ETS Research Report Series. 1993:i-27

Previous research has shown that a single factor, factor being used in the sense of factor analysis, gave a very good account of item covariances within TOEFL® sections. This result is consistent with the assumption that the product of a person para

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0a7d29ed9e7f237af54a458e76d5acdc
https://doi.org/10.1002/j.2333-8504.1993.tb01568.x

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RELIABILITY OF THE TEST OF SPOKEN ENGLISH REVISITED

Autor: Robert F. Boldt

Publikováno v: ETS Research Report Series. 1992:i-22

The Test of Spoken English (TSE) is an internationally administered instrument for assessing nonnative speakers' proficiency in speaking English. The research foundation of the TSE® examination is currently described in the Manual for Score Users. T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f0ab38837177eeb7a67fee353176760
https://doi.org/10.1002/j.2333-8504.1992.tb01483.x

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DISTRIBUTIONS OF ACTFL RATINGS BY TOEFL SCORE RANGES

Autor: Rosalea Courtney, Robert F. Boldt, Diane Larsen-Freeman, M. S. Reed

Publikováno v: ETS Research Report Series. 1992:i-48

The purpose of this study was to align verbal descriptions of test takers' language performance with distributions of the numerical scores they received on the three sections (Listening Comprehension, Structure and Written Expression, and Reading Com

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d46149bb7d2e01bf223f33a913889ccb
https://doi.org/10.1002/j.2333-8504.1992.tb01490.x

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CROSS-VALIDATION OF A PROPORTIONAL ITEM RESPONSE CURVE MODEL

Autor: Robert F. Boldt

Publikováno v: ETS Research Report Series. 1991:i-22

In a previous research study, factor analyses of TOEFL section item correlations (phi-coefficients) yielded a single factor in each section. This result is consistent with the assumption that, within sections, the item response curves are proportiona

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d4be14063420e7974650a7cd93b5f545
https://doi.org/10.1002/j.2333-8504.1991.tb01400.x

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Latent structure analysis of the Test of English as a Foreign Language

Autor: Robert F. Boldt

Publikováno v: Language Testing. 6:123-142

Equating studies support the use of IRT methods for TOEFL equating, but there remains a discrepancy between IRT assumptions and diversity of the population served. The model assumes that a single latent proficiency variable underlies item performance

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70253845c13e16dcc7001d8805905321
https://doi.org/10.1177/026553228900600201

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An Approximately Reproducing Scoring Scheme That Aligns Random Response and Omission

Autor: Robert F. Boldt

Publikováno v: Educational and Psychological Measurement. 34:57-61

One formulation of confidence scoring requires the examinee to indicate as a number his personal probability of the correctness of each alternative in a multiple-choice test. For this formulation, a linear transformation of the logarithm of the perso

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8988c5bd941c153f17ec85f23f1fd07f
https://doi.org/10.1177/001316447403400108

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