Visual analysis in single case experimental design studies: Brief review and guidelines

Justin D. Lane, David L. Gast

Research output: Contribution to journalReview articlepeer-review

256 Scopus citations


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.

Original languageEnglish
Pages (from-to)445-463
Number of pages19
JournalNeuropsychological Rehabilitation
Issue number3-4
StatePublished - 2014


  • Single case experimental design
  • Visual analysis

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Rehabilitation
  • Arts and Humanities (miscellaneous)
  • Applied Psychology


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