The United States Supreme Court held that the Idaho "utter disregard" aggravating circumstance provided a clear and objective standard for the sentencer to apply when determining if the death penalty should be imposed.
Arave v. Creech, 113 S. Ct. 1534 (1993).
Cheri L. Bugajski,
Criminal Law - Capital Punishment - Aggravating Circumstances - Clear and Objective Standard,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol32/iss2/9