“…Generally, the results of the studies that assessed states-level changes in imprisonment over time (e.g., Harmon, 2013;Marvell, 1995;Nicholson-Crotty, 2004;Sorensen & Stemen, 2002;Spelman, 2009;Stemen et al, 2006;Zhang et al, 2009) have suggested that the elimination of discretionary parole release (e.g., determinate sentencing) and the adoption of truth in sentencing were more likely to be associated with changes in imprisonment, though some studies indicated these reforms increased imprisonment while others suggested they decreased it. For example, Stemen and Rengifo (2010) found that back-end sentencing reforms that constrain release decisions are more impactful than front-end reforms that constrain sentencing discretion.…”