The development of moral judgments concerning capital punishment.

Data from a 20-year longitudinal study of the development of moral judgment in American males indicate that the most mature stages evince moral condemnation of the death penalty. The authors conclude that American moral standards are evolving towards a view of execution as unjust punishment. They contend that a theory of punishment based on the highest stage of moral reasoning is more valid than lower-stage justifications for capital punishment, and that it provides a rational basis for asserting the immorality--and unconstitutionality--of capital punishment, irrespective of uncertainties as to the deterrent efficacy of the death penalty.