本研究係以Hofer 的知識信念為理論基礎，以發展臺灣國中生「數學知識信念 量表」（Epistemological Beliefs Scale-Mathematics，以下簡稱EBS-M），其包含知 識的確定、知識的結構及知識的辯護三個分量表，共計14 題。本研究以北、中、 南三個區域之國中生為研究對象，選取自10個縣市、30所學校、60 個班級，有效 樣本為1,723 人。研究發現：(1)三個分量表的Cronbach’s 係數介於.82～.89 之 間、再測信度介於.60～.69 之間，顯示量表具有良好的內部一致性信度與穩定性； (2)三個一階因素具有良好的組成信度與平均變異抽取量；(3)本量表具有良好的建 構效度、區辨效度、聚斂效度及效標關聯效度；(4)複核效度分析顯示，EBS-M 具 有良好的模式穩定性與效度延展性。

Based on Hofer’s epistemological beliefs theory, this study aims to develop the Epistemological Beliefs Scale-Mathematics (EBS-M) for Taiwan junior high school students. There are 14 items in this scale including three sub-scales, certainty of knowledge, structure of knowledge, and justification for knowing. A cluster sampling was used in the study, and the participants were 1,723 eighth grade students. They were recruited from 60 classes of 30 junior high schools in Taiwan. The results are as follows, (1) the range of Cronbach’s of three sub-scales is from .82 to .89, and the range of test-retest reliabilities is from .60 to .69; (2) the three factors shows good composite reliability and average variance extracted; (3) the results of data analysis show good construct validity, convergent validity, discriminant validity, and criterion-related validity; (4) the finding of cross-validation shows the scale has good stability and validity extension.