May 1, 2010 HOPE Implementation Analysis https://www.scfcenter.org/resources/Research/201005%20HOPE%20Implementation%20Analysis.pdf
Kiyabu et al. apply a network model to HOPE's implementation in Hawaii.
January 1, 2010 Impact of Hawaii's HOPE Program on Drug Use, Crime, and Recidivism http://www.pewtrusts.org/~/media/legacy/uploadedfiles/pcs_assets/2010/The20Impact20of20HawaiiE28099s20HOPE20Program20on20Drug20Use20Crime20and20Recidivismpdf.pdf
The Pew Center on the States describes both the results and the evaluation methodology of HOPE in Hawaii.
December 1, 2009 Managing Drug-Involved Probationers with Swift and Certain Sanctions https://www.scfcenter.org/resources/Research/200912%20Managing%20Drug%20Involved%20Probationers%20with%20Swift%20and%20Certain%20Sanctions.pdf
Drs. Hawken and Kleiman evaluate HOPE in Hawaii.