Lane Justin D, Gast David L
a Department of Special Education , The University of Georgia , Athens , GA , USA.
Neuropsychol Rehabil. 2014;24(3-4):445-63. doi: 10.1080/09602011.2013.815636. Epub 2013 Jul 24.
Visual analysis of graphic displays of data is a cornerstone of studies using a single case experimental design (SCED). Data are graphed for each participant during a study with trend, level, and stability of data assessed within and between conditions. Reliable interpretations of effects of an intervention are dependent on researchers' understanding and use of systematic procedures. The purpose of this paper is to provide readers with a rationale for visual analysis of data when using a SCED, a step-by-step guide for conducting a visual analysis of graphed data, as well as to highlight considerations for persons interested in using visual analysis to evaluate an intervention, especially the importance of collecting reliability data for dependent measures and fidelity of implementation of study procedures.
对数据图形显示进行视觉分析是采用单病例实验设计（SCED）的研究的基石。在一项研究中，会为每个参与者绘制数据图表，并在不同条件下以及不同条件之间评估数据的趋势、水平和稳定性。对干预效果的可靠解释取决于研究人员对系统程序的理解和运用。本文的目的是为读者提供在使用SCED时对数据进行视觉分析的基本原理、对绘制数据进行视觉分析的分步指南，同时突出对有兴趣使用视觉分析来评估干预措施的人员的注意事项，特别是为相关测量收集可靠性数据以及研究程序实施的保真度的重要性。
