The Maternal Interactive Beliefs Questionnaire (Johnston and Wong, 2002) assesses maternal beliefs about children’s language development. This study investigated the psychometric properties of a Persian translation of this questionnaire. The translation followed the protocol of the World Health Organization. Psychometric properties were evaluated using data from 301 Iranian mothers of children aged two to five years. The internal consistency and test–retest reliability of the total scores were calculated for comparative purposes, and an exploratory factor analysis was conducted to determine the underlying structure. A principal component analysis revealed two components (accounting for 14.46% and 7.57% of the variance, respectively). The first component represented supportive maternal beliefs. The second component represented directive maternal beliefs. Cronbach’s alpha for components one, two and the total scores were acceptable (0.73, 0.71, and 0.73, respectively), and the test–retest reliability of the total score was high (intra-class correlation coefficient = 0.97). Consistent with previous research, the findings indicated that the translated survey is reliable to be used with Iranian mothers. The novel finding is that the survey has two underlying and theoretically plausible components; therefore, the use of a total scale score is cautioned. We recommend future testing of the two components.

中文翻译：

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翻译成波斯语的母亲互动信念问卷的可靠性和因素结构

母亲互动信念问卷（Johnston 和 Wong，2002 年）评估母亲对儿童语言发展的信念。本研究调查了该问卷的波斯语翻译的心理测量特性。翻译遵循世界卫生组织的协议。使用来自 301 名 2 至 5 岁儿童的伊朗母亲的数据评估心理测量特性。为了比较目的，计算了总分的内部一致性和重测信度，并进行了探索性因素分析以确定基础结构。主成分分析揭示了两个成分（分别占方差的 14.46% 和 7.57%）。第一个组成部分代表了支持性的母亲信念。第二个组成部分代表了指导性的母性信念。分量一、二和总分的 Cronbach's alpha 是可以接受的（分别为 0.73、0.71 和 0.73），并且总分的重测信度很高（类内相关系数 = 0.97）。与之前的研究一致，研究结果表明翻译的调查对于伊朗母亲来说是可靠的。新的发现是，该调查有两个潜在的、理论上合理的组成部分；因此，谨慎使用总分。我们建议将来对这两个组件进行测试。与之前的研究一致，研究结果表明翻译的调查对于伊朗母亲来说是可靠的。新的发现是，该调查有两个潜在的、理论上合理的组成部分；因此，谨慎使用总分。我们建议将来对这两个组件进行测试。与之前的研究一致，研究结果表明翻译的调查对于伊朗母亲来说是可靠的。新的发现是，该调查有两个潜在的、理论上合理的组成部分；因此，谨慎使用总分。我们建议将来对这两个组件进行测试。