Current Directions in Psychological Science

Statistical Analyses of Single-Case Designs

Abstract

Single-case-design researchers rarely used statistics in the past, but that is changing. In this article, I review the rapidly developing state of statistical analyses for single-case designs, including effect sizes, multilevel models, and Bayesian analyses. No analysis meets all the desiderata for an optimal single-case-design analysis, but this may be remedied in the near future. Single-case-design researchers will have incentives to use these analyses as they become more user-friendly and beneficial.