What does it mean when a study finds no effects?

Title:	What does it mean when a study finds no effects?
Description:	This short brief for education decisionmakers discusses three main factors that may contribute to a finding of no effects: failure of theory, failure of implementation, and failure of research design. It provides readers with questions to ask themselves to better understand 'no effects' findings, and describes other contextual factors to consider when deciding what to do next.
Online Availability:	Download, view and print the report as a pdf file. (254KB)
Cover Date:	October 2016
Web Release:	October 27, 2016
Print Release:	October 27, 2016
Publication #:	REL 2017265 General Ordering Information
Center/Program:	REL
Associated Centers:	NCEE
Authors:	Neil Seftor: Mathematica Policy Research
Type of Product:	Reference Guide
Keywords:	Educational Research Research Design Studies
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