The visualization community regards visualization literacy as a necessary skill. Yet, despite the recent increase in research into visualization literacy by the education and visualization communities, we lack practical and time-effective instruments for the widespread measurements of people's comprehension and interpretation of visual designs. We present Mini-VLAT, a brief but practical visualization literacy test. The Mini-VLAT is a 12-item short form of the 53-item Visualization Literacy Assessment Test (VLAT). The Mini-VLAT is reliable (coefficient omega = 0.72) and strongly correlates with the VLAT. Five visualization experts validated the Mini-VLAT items, yielding an average content validity ratio (CVR) of 0.6. We further validate Mini-VLAT by demonstrating a strong positive correlation between study participants' Mini-VLAT scores and their aptitude for learning an unfamiliar visualization using a Parallel Coordinate Plot test. Overall, the Mini-VLAT items showed a similar pattern of validity and reliability as the 53-item VLAT. The results show that Mini-VLAT is a psychometrically sound and practical short measure of visualization literacy.

翻译：可视化社区将可视化素养视为一项必要技能。然而，尽管近年来教育和可视化领域对可视化素养的研究有所增加，但在广泛测量人们对视觉设计的理解与解读能力方面，仍缺乏实用且省时的工具。我们提出了Mini-VLAT——一种简短但实用的可视化素养测试。Mini-VLAT是包含12道题目的精简版可视化素养评估测试（VLAT），后者原有53道题目。Mini-VLAT具有良好的信度（ω系数=0.72），且与VLAT高度相关。五位可视化专家验证了Mini-VLAT的题目内容，平均内容效度比（CVR）为0.6。我们进一步通过实验验证了Mini-VLAT的有效性：研究参与者的Mini-VLAT得分与其使用平行坐标图学习陌生可视化的能力呈强正相关。总体而言，Mini-VLAT题目在效度和信度上与53题版的VLAT表现出相似模式。结果表明，Mini-VLAT是一种心理测量学上可靠且实用的简短可视化素养测量工具。