The American prison system is larger than ever and ranks among the largest in the world. Yet, prisons have received little research attention relative to other issues in forensic psychology. In an effort to study one facet of the prison system, a scale for measuring attitudes toward prison reform was developed. The 12-item scale has a single factor measuring whether people feel prisons should be tougher or softer on inmates. Several studies with diverse samples found that the scale has a consistent factor structure, good reliability, and a coherent pattern of relationships to other psychological variables. The scale appears to be a promising tool for studying how people want to treat those who have been officially rejected by society.