PURPOSE Oral language skills provide a critical foundation for formal education and especially for the development of children's literacy (reading and spelling) skills. It is therefore important for teachers to be able to assess children's language skills, especially if they are concerned about their learning. We report the development and standardization of a mobile app-LanguageScreen-that can be used by education professionals to assess children's language ability. METHOD The standardization sample included data from approximately 350,000 children aged 3;06 (years;months) to 8;11 who were screened for receptive and expressive language skills using LanguageScreen. Rasch scaling was used to select items of appropriate difficulty on a single unidimensional scale. RESULTS LanguageScreen has excellent psychometric properties, including high reliability, good fit to the Rasch model, and minimal differential item functioning across key student groups. Girls outperformed boys, and children with English as an additional language scored less well compared to monolingual English speakers. CONCLUSIONS LanguageScreen provides an easy-to-use, reliable, child-friendly means of identifying children with language difficulties. Its use in schools may serve to raise teachers' awareness of variations in language skills and their importance for educational practice.

中文翻译：

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LanguageScreen：自动语言评估应用程序的开发、验证和标准化。


目的 口语技能为正规教育，特别是儿童识字（阅读和拼写）技能的发展提供了重要的基础。因此，教师能够评估儿童的语言技能非常重要，尤其是当他们关心自己的学习时。我们报告了移动应用程序“LanguageScreen”的开发和标准化，教育专业人员可以使用该应用程序来评估儿童的语言能力。方法 标准化样本包括约 350,000 名年龄在 3;06（岁；月）至 8;11 岁儿童的数据，他们使用 LanguageScreen 对接受和表达语言技能进行了筛查。拉希尺度用于在单一一维尺度上选择适当难度的项目。结果 LanguageScreen 具有出色的心理测量特性，包括高可靠性、与 Rasch 模型的良好拟合以及关键学生群体之间最小差异项目功能。女孩的表现优于男孩，而以英语作为附加语言的儿童与只讲英语的儿童相比，得分较低。结论 LanguageScreen 提供了一种易于使用、可靠且适合儿童的方法来识别有语言障碍的儿童。它在学校的使用可能有助于提高教师对语言技能差异及其对教育实践重要性的认识。