The study of punitive attitudes has intensified in recent decades. However, the instruments used to measure them have not developed in the same way. The aim of this work has been to develop and validate a scale on a representative sample of the Spanish population (n = 1.000, 51.1 % women, median age = 46,3 years). To this end, a cross-validation design has been used, dividing the sample into two halves equivalent to those applied exploratory and confirmatory factorial analyses. The results provide evidence of the reliability and validity of the scale consisting of two major factors (“attitudes towards crime” and “attitudes towards juvenile delinquency”) and a second-order factor. The differences between sub-scales are significant and the requirement for severity is higher when offenders are adults. Furthermore, the conglomerate analysis indicates that most subjects do not support or reject all punitive measures, but take intermediate positions.