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网络媒介素养是数字社会中公民的一项基本技能。此次研究研制反映青少年网络媒介素养水平的量表(NMLST),并应用非参数项目反应理论(NIRT)进行校正。采纳国内28省市1408例青少年样本,采用Mokken量度对项目进行分析修正,双因子结构方程模型进行因子验证。研究结果发现该量表符合单维性与单调性检验,可以根据项目反应理论进行修订。最终形成25题项青少年网络媒介素养的测评量表(NMLST-25),各题项参数具有合理的取值范围。结构方程等显示量表具有清晰的因子结构。NMLST-25的题项排序具有不变性特点,经测试后6题项构成核心题干。NMLST-25具备合适的信效度与内部结构,可提供作为青少年网络媒介素养教育的评估工具。
Internet literacy is a basic skill for citizens in the digital society. The study developed a scale that reflects the level of media literacy in adolescents (NMLST) and was calibrated using the Non-parametric Project Response Theory (NIRT). The sample of 1408 young people from 28 provinces and cities in China was adopted. The Mokken metric was used to analyze and correct the project, and the two-factor structural equation model was validated by the factor. The study found that the scale consistent with univariate and monotonicity test, can be revised according to the project response theory. Finally, a total of 25 items of the Youth Network Media Literacy Assessment Scale (NMLST-25) are formed, and the parameters of each item have a reasonable range of values. Structural equations show that the scale has a clear factor structure. NMLST-25 has the same feature of invariant sorting, after testing six questions constitute the core issues. NMLST-25 has the appropriate level of trustworthiness and internal structure to provide an assessment tool for media literacy education for adolescents.