Data for: Citizen science as an ecosystem of engagement: Implications for learning and broadening participation

The bulk of research on citizen science participants is project-centric, based on an assumption that volunteers experience a single project. Contrary to this assumption, survey responses (n=3,894) and digital trace data (n=3,649) from volunteers, who collectively engaged in 1,126 unique projects, revealed that multi-project participation was the norm. Only 23% of volunteers were singletons (who participated in only one project), and multi-project participants split evenly between disciplines specialists (39%) and discipline spanners (38% joined projects with different disciplinary topics), and unevenly between mode specialists (67%) and mode spanners (33% participated in online and offline projects). Public engagement was narrow: multi-project participants were eight times more likely to be white, and five times more likely to hold advanced degrees, than the general population. We propose a volunteer-centric framework that explores how the dynamic accumulation of experiences in a projec...现有针对公民科学（Citizen Science）参与者的研究大多以项目为中心，其预设前提为志愿者仅参与单个项目。与此预设相悖的是，来自志愿者的3894份问卷回复与3649条数字追踪数据显示：这些志愿者累计参与了1126个独特项目，而多项目参与实为常态。仅23%的志愿者为单项目参与者（即仅参与单个项目）；多项目参与者中，学科专精者（39%）与跨学科参与者（38%，即参与不同学科主题的项目）占比相当，而参与模式专精者（67%）与跨模式参与者（33%，即同时参与线上与线下项目）的占比则差异显著。该群体的公众参与代表性相对狭窄：相较于普通大众，多项目参与者为白人的概率是普通人群的8倍，拥有高等学历的概率则为5倍。本研究提出了一个以志愿者为中心的分析框架，旨在探究参与者在项目中的经验动态积累如何……