This is an archived copy of the 2013 Open Data Barometer Researchers Handbook. You can find out more about the Open Data Barometer at www.opendatabarometer.org The Barometer study was undertaken with support of the Open Data Institute, and the World Wide Web Foundation, and formed a pilot as part of the Common Assessment Methods components of the Exploring the Emerging Impacts of Open Data project. The Handbook contains detailed definitions of questions asked during the Open Data Barometer research, as well as details of the survey and peer-review methodology employed.