Dataset#1 and Dataset#2 for Making drawings speak through mathematical metrics

Dataset 1 and Dataset 2 for the paper Making drawings speak through mathematical metrics Figurative drawing is a skill that takes time to learn, and evolves during different childhood phases that begin with scribbling and end with representational drawing. Between these phases, it is difficult to assess when and how children demonstrate intentions and representativeness in their drawings. The marks produced are increasingly goal-oriented and efficient as the child’s skills progress from scribbles to figurative drawings. Pre-figurative activities provide an opportunity to focus on drawing processes. We applied fourteen metrics to two different datasets (N=65 and N=345) to better understand the intentional and representational processes behind drawing, and combined these metrics using principal component analysis (PCA) in different biologically significant dimensions. Three dimensions were identified: efficiency based on spatial metrics, diversity with colour metrics, and temporal sequentiality. The metrics at play in each dimension are similar for both datasets, and PCA explains 77% of the variance in both datasets. These analyses differentiate scribbles by children from those drawn by adults. The three dimensions highlighted by this study provide a better understanding of the emergence of intentions and representativeness in drawings. We have already discussed the perspectives of such findings in Comparative Psychology and Evolutionary Anthropology.用于论文《以数学指标解析绘画表意》的数据集1与数据集2。具象绘画（figurative drawing）是一项需经长期学习方可掌握的技能，其发展贯穿儿童期的多个阶段：从涂鸦（scribbling）起步，最终演进至再现性绘画（representational drawing）。在这些阶段之间，我们难以评判儿童何时以及如何在绘画中展现创作意图与表征属性。随着儿童绘画技能从涂鸦阶段向具象绘画阶段进阶，其创作的笔触痕迹愈发具备目标导向性与高效性。前具象创作活动（pre-figurative activities）为专注于绘画过程提供了可行路径。为更深入地探析绘画背后的创作意图与表征过程，我们针对两个不同的数据集（样本量分别为N=65与N=345）应用了14项指标，并借助主成分分析（PCA）将这些指标整合至不同的生物学意义维度中。最终确定了三个维度：基于空间指标的效率维度、基于色彩指标的多样性维度，以及时间序列性维度。两个数据集在各维度所适配的指标均保持一致，且主成分分析在两个数据集上均可解释77%的方差变异。通过此类分析，我们可有效区分儿童涂鸦作品与成人绘画作品。本研究提出的这三个维度，有助于我们更全面地理解绘画中创作意图与表征属性的形成机制。我们已在比较心理学（Comparative Psychology）与进化人类学（Evolutionary Anthropology）领域探讨了该研究发现的相关研究视角。