Social media have expanded citizens’ political repertoires with new modes of action. To measure these changing political practices, a new instrument, called the Social Media Political Participation Scale was developed and psychometrically tested. The instrument aims to capture both active, expressive forms of political action through social media as well as cognitive political social media use (e.g., sharing posts versus information seeking and acquiring). Based on a literature review and the recommendations of an expert panel, an item pool was generated. The second phase consisted of a questionnaire completed by 595 teenagers. The construct validity was assessed using exploratory factor analysis (EFA) and confirmatory factor analysis (CFA), as well as convergent validity and internal consistency. The analyses revealed four theoretically grounded constructs measured with 21 items: latent engagement, follower engagement, expressive engagement and counter engagement. As a validated instrument, the Social Media Political Participation Scale allows future research to gain a more profound insight into who is politically engaged and why, as well as how digital technologies are embedded in diverse forms of political action.

社交媒体通过新的行动方式扩大了公民的政治资源。为了衡量这些不断变化的政治习俗，开发了一种名为“社交媒体政治参与量表”的新工具并进行了心理测验。该工具旨在通过社交媒体以及认知政治社交媒体的使用（例如，分享职位与寻求和获取信息）来捕捉活跃，表达形式的政治行为。根据文献综述和专家小组的建议，生成了一个项目库。第二阶段是由595名青少年填写的调查表。使用探索性因子分析（EFA）和确认性因子分析（CFA）以及收敛性有效性和内部一致性来评估构建体的有效性。潜在参与，追随者参与，表达参与和反参与。作为一种经过验证的工具，社交媒体政治参与量表可以使将来的研究获得更深刻的洞察力，以了解谁参与了政治活动，为什么参与以及数字技术如何嵌入各种形式的政治活动中。