What is the test for individualized sentencing in the context of the death penalty?

a reasoned, individualized sentencing determination based on a death-eligible defendants record, personal characteristics, and the circumstances of his crime." Id. at 17374, 126 S.Ct. 2516 ; see Jones v. United States , 527 U.S. at 381, 119 S.Ct. 2090 ("[F]or a capital sentencing scheme to pass constitutional muster, it must perform a narrowing function with respect to the class of persons eligible for the death penalty and must also ensure that capital sentencing decisions rest upon an individualized inquiry.").