Introduction
This chapter provides an overview of the book, including the following major topics: why this neglected topic is so important; the ubiquity of prior record enhancement in modern sentencing systems, and their particularly powerful roles in U.S. jurisdictions with sentencing guidelines; the wide variations in the criminal history scoring formulas used in guidelines, with respect to matters such as which prior crimes and other factors are included, the weight each receives, and the degree to which a high score increases recommended sentence severity; the unclear punishment rationales for such enhancements; and the numerous negative consequences of these enhancements— increasing the size and expense of prison populations, undermining the important goal of punishment in proportion to offense severity, increasing the need for prison beds to house property and other nonviolent offenders, generating large numbers of aging prison inmates, contributing to racial disproportionality in prison populations, and undermining offenders’ efforts to reintegrate into society.