 The American Psychiatric Association submitted an "amicus curiae" brief in support of the defendant's position that such testimony should be inadmissible and urging curtailment of psychiatric testimony regarding future dangerousness and a prohibition of such testimony based on hypothetical data.In "Estelle v. Smith", 451 U.S. 454 (1981), the Supreme Court previously ruled on a Texas death penalty case regarding the use of a psychiatric examination to determine the defendant's competency to stand trial to predict future dangerousness.In that case the Court held that the Fifth Amendment's privilege against self-incrimination applied to pretrial psychiatric examinations by a prosecution psychiatrist who later testified regarding the defendant's future dangerousness without warning the defendant that such evidence could be used against him.