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Consumer Expenditure Surveys

Gemini Field Tests

The Gemini project was started in 2009 to redesign the survey in an effort to address measurement error. In July 2013, a redesign plan was approved, followed by the creation of a roadmap to further develop and test the redesign plan leading to its implementation. Part of this testing involves several planned field tests. Links to information and materials on each of the Gemini related field tests can be found on this page.

Gemini Field Tests
Field TestFielding PeriodDesignResults

Individual Diaries Feasiblity Test

August 2014-December 2014

Detailed Overview

Final report

Gemini Proof-of-Concept Test

July 2015-September 2015

Detailed Overview

Report 1*
Report 2
Report 3

Incentives and Outlets Test

July 2016-December 2016

Detailed Overview

Final report

Large Scale Feasibility Test of Online Diaries

October 2019-April 2020

Detailed Overview


*Proof-of-Concept Test Report 1 is not publicly available.

For more information on the Gemini Redesign project visit the Gemini Redesign Project page.


Last Modified Date: May 19, 2020