Resources for WWC Reviewers

Reference
Acceptable Methods for Addressing Missing Data
April 11, 2019

On April 11, 2019, the What Works Clearinghouse (WWC) hosted a free webinar on the new guidelines for reviewing analyses with missing or imputed data under the WWC Standards Handbook, Version 4.0.
Webinar
Missing Data in Group Design Studies
April 11, 2019

On April 11, 2019, the What Works Clearinghouse (WWC) hosted a free webinar on the new guidelines for reviewing analyses with missing or imputed data under the WWC Standards Handbook, Version 4.0. The...
Webinar
Understanding the Updated WWC Procedures and Standards
November 16, 2017

On November 16, 2017, the What Works Clearinghouse (WWC) delivered a presentation on the Version 4.0 Procedures and Standards Handbooks, which were released October 30, 2017. The approaches researcher...
Guide
Reviewer Guidance for Use with the Procedures and Standards Handbooks V4.0
October 1, 2017

The What Works Clearinghouse (WWC) Procedures and Standards Handbooks (version 4.0) provides reviewers with a detailed description of the procedures and standards used by the WWC in the review of stud...
Reference
Key Criteria Used in WWC Reviews of Single-Case Design Research
January 1, 2017

The What Works Clearinghouse (WWC) Procedures and Standards Handbook (version 3.0) provides reviewers with a detailed description of the pilot single-case design standards and procedures. The WWC work...
Webinar
Applying the What Works Clearinghouse Standards to Postsecondary Research
March 10, 2016

This What Works Clearinghouse (WWC) webinar covers how the current WWC Procedures and Standards Handbook can be applied to postsecondary research. The presenters Will Doyle from Vanderbilt University,...
Reference
Attrition
Attrition (loss of sample) occurs when individuals initially included in a study are not included in the final study analysis. Attrition is a common issue in education research and can occur for many ...
Reference
Baseline Equivalence
As part of the WWC review process for certain types of studies, reviewers assess whether the intervention group (those that received the intervention of interest) and the comparison group (those that ...
Reference
Confounding Factors
A confounding factor is an aspect of a study that makes it impossible to tell whether the intervention or that factor is responsible for differences in outcomes. In WWC study reviews, certified review...

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