Dataset for: Psychometric Evidence for the Functional Numeracy Assessment Dyscalculia Battery (FUNA-DB Screener): An Online Assessment of Mathematical Learning Difficulties

Background: Although several paper-and-pencil and digital online measures have been developed to assess basic numeracy skills and identify mathematical learning difficulties in children, psychometric evidence of these measures are seldom thoroughly reported and published. Establishing the validity and reliability of educational measures is a fundamental part of evidence-based practice. Objective: This study aimed to examine the test-retest reliability, longitudinal measurement invariance, and convergent validity of a new digital online dyscalculia screener, the Functional Numeracy Assessment Dyscalculia Battery (FUNA-DB), targeted to 9–16-year-old children. Method: The participants were 358 children (165 boys and 193 girls) in grades 3, 5 and 7, who participated in the study at two time points. Children's numeracy skills were measured using two time-limited tests: the FUNA-DB online screener and a standardized paper-and-pencil basic arithmetic test, RMAT. Results: Our results showed that the FUNA-DB has a strong test-retest reliability, displays measurement invariance over time, and is meaningfully related to RMAT. Conclusion: The psychometric evidence supports using the FUNA-DB to measure school-aged children’s number processing and arithmetical fluency across time.

背景：尽管已有多款纸笔式与数字化在线测评工具用于评估儿童基础数能力、识别数学学习障碍，但此类工具的心理测量学证据极少得到全面报告与发表。建立教育测评工具的效度与信度是循证实践的核心环节。
研究目的：本研究旨在针对面向9~16岁儿童的新型数字化在线计算障碍筛查工具——功能性数能评估计算障碍量表（Functional Numeracy Assessment Dyscalculia Battery, FUNA-DB），检验其重测信度、纵向测量恒等性与会聚效度。
研究方法：本研究的参与者为358名3、5、7年级儿童（其中男生165名，女生193名），均参与了两个时间点的测试。采用两项限时测评工具评估儿童的数能力：FUNA-DB在线筛查量表与标准化纸笔基础算术测试RMAT。
研究结果：结果显示，FUNA-DB具备良好的重测信度，随时间推移保持测量恒等性，且与RMAT存在显著相关。
研究结论：上述心理测量学证据支持使用FUNA-DB跨时间评估学龄儿童的数加工能力与算术流畅性。