Single-Case Intervention Research Design Standards

In an effort to responsibly incorporate evidence based on single-case designs into the What Works Clearinghouse evidence base, the WWC assembled a panel of individuals with expertise in quantitative methods and SCD methodology to draft SCD standards

Thomas R. Kratochwill; John H. Hitchcock; Robert H. Horner; Joel R. Levin; Samuel L. Odom; David M. Rindskopf; William R. Shadish

2012

Scholarcy highlights

  • In an effort to responsibly incorporate evidence based on single-case designs into the What Works Clearinghouse evidence base, the WWC assembled a panel of individuals with expertise in quantitative methods and SCD methodology to draft SCD standards
  • The panel provides an overview of the SCD standards recommended by the panel and adopted in Version 1.0 of the WWC’s official pilot standards
  • The design standards focus on the methodological soundness of SCDs, whereby reviewers assign the categories of Meets Standards, Meets Standards With Reservations, and Does Not Meet Standards to each study
  • Evidence criteria focus on the credibility of the reported evidence, whereby the outcome measures that meet the design standards are examined by reviewers trained in visual analysis and categorized as demonstrating Strong Evidence, Moderate Evidence, or No Evidence
  • It should be noted that the WWC may revise the Version 1.0 standards based on the results of the pilot; future versions of the WWC standards can be found at http://www.whatworks.ed.gov

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