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A Psychometric Analysis and Revision of the Mathematics Teaching Efficacy Beliefs Instrument Using the Rasch Model: Focusing on Personal Teaching Efficacy
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Rasch 모형을 활용한 수학 교수 효능감 측정 도구의 심리측정적 특성 분석 및 수정: 개인 효능감 요인을 중심으로

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Type
Academic journal
Author
Hwang Sunghwan (서울가주초등학교)
Journal
한국학교수학회 한국학교수학회논문집 한국학교수학회논문집 제24권 제1호 KCI Accredited Journals
Published
2021.1
Pages
1 - 18 (18page)

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A Psychometric Analysis and Revision of the Mathematics Teaching Efficacy Beliefs Instrument Using the Rasch Model: Focusing on Personal Teaching Efficacy
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The purpose of the study was to examine the psychometric properties of the personal teaching efficacy of the Mathematics Teaching Efficacy Beliefs Instrument and revise the scale for the use of Korean elementary school teachers. Data were collected from 299 elementary teachers. A Rasch analysis was used to evaluate unidimensionality and appropriateness of category use and item difficulty levels. Moreover, person separation and reliability as well as item separation and reliability were examined using the revised scale. Results suggested the original personal teaching efficacy scale (13 items with five categories) had several problems in its psychometric properties. Thus, we revised the scale into eight items with four categories. The results of the follow-up analysis show the revised scale provided sufficient psychometric properties for measuring Korean elementary school teachers’ self-efficacy beliefs for teaching mathematics. Limitations and implications of the study are also discussed.

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