¶1Dissenting Opinion by
¶2I dissent from the imposition of the death sentence and its affirmance by this Court. See my dissent in Commonwealth v. Ahearn, 421 Pa. 311, 218 A. 2d 561 (1966), and the opinion of Judge Breitel of the New York Court of Appeals in People v. Moseley, 20 N.Y. 2d 64, 281 N.Y.S. 2d 762 (1967).
¶3Dissenting Opinion by
¶4I continue to adhere to the views expressed last year in my dissenting opinion in Commonwealth v. *321Ahearn, 421 Pa. 311, 331, 218 A. 2d 561, 571 (1966),
¶5In Ahearn, the majority opinion conceded that psychiatric testimony was both admissible and relevant for the purpose of determining penalty following a finding of murder in the first degree.
¶6Appellant concedes that under the M’Naghten Rule, which is the current test for criminal responsibility in Pennsylvania, he is guilty of murder.
¶7“An appropriate exercise of judicial discretion as required by the statute contemplates that the death penalty'be imposed where all the facts surrounding the criminal act and the criminal actor have been exhaus*323lively considered and where, after such consideration, no other conclusion can be justified than the extermination of the convicted criminal by death. Determination of the appropriate penalty arrived at in any other manner constitutes an abuse of the judicial discretion.”
¶8The court below was aware of the Greenprinciple but concluded that, in view of certain aggravating factors,
¶9I dissent.
¶10 Interestingly the majority opinion does not even cite Ahearn. Yet there can be no question that that decision, as both the appellant and appellee recognize, is crucial to the disposition of the instant case.
¶11 A recent note in 71 Dick. L. Rev. 100 (1966) characterizes the Ahearnholding as having “disregarded modern enlightened authority and unwisely restricted the purpose for which psychiatric testimony may be admitted into evidence.” Not only does this note, in my view, demonstrate the truth of its principal thesis but it also convincingly shows that Ahearnrepresents a new development in the law of Pennsylvania, for “while prior decisions have held that neither judge nor jury is to be controlled by psychiatric testimony, and that such testimony is to be accorded little weight, no prior Pennsylvania Case has ever held that such testimony is inadmissible to show a lack of the elements necessary to establish murder in the first degree.” Id. at 104.
¶12I continue to beUeve that the most realistic rule devised to deal with this problem is that of The American Law Institute: “Evidence that the defendant suffered from a mental disease or defect is admissible whenever it is relevant to prove that the defendant did or did not have a state of mind which is an element of the offense.” A.L.I. Model Penal Code, §4.02(1) (Official Draft, 1962). See also People v. Gorshen, 51 Cal. 2d 716, 726-27, 336 P. 2d 492, 498-99 (1959).
¶14 In my view the entire area of criminal responsibility could benefit from a fresh review by the judiciary. See, e.g., United States v. Freeman, 357 F. 2d 606 (2d Cir. 1966) (adopting the A.L.I. Model Penal Code test of legal insanity). I believe this to be a step in the right direction.
¶15 These aggravating factors were: (1) the murder was committed by a convict already serving a long prison sentence; (2) the defendant had previously been convicted of felonies involving the use of violence; (3) at the time the murder was committed the defendant also caused serious bodily injury to another person. At the same time, however, the court recognized Howard’s serious mental incapacity prevented him from fully controlling his responses.
¶16 The court below felt that the above conclusion was necessitated by certain language from Commonwealth v. Smith, 405 Pa. 456, 459, 176 A. 2d 619, 620 (1962), to wit: “This Court has sustained a verdict of first degree murder with penalty of death where defendant allegedly had an irresistible impulse, was a moron or a mental defective or a sexual pervert or a psychopathic personality, or had been previously confined in the hospital for the criminal insane for 14 years, or was a schizophrenic psychopath or was an unstable, mentally defective moron, or was feeble-minded. [Citations omitted'].” Eaeh case must be decided on its own facts and the mere existence of psychiatric evidence tending to show the existence of a mental disease or defect is not sufficient to preclude the imposition of the death penalty. Most, if not all, *324of the cases cited in the Smithopinion are distinguishable either because of the quantum of psychiatric testimony and/or because, as in Smith, a jury rather than a judge had determined the penalty. In the latter circumstances, this Court may not reverse the sentence for an abuse of discretion. See Commonwealth v. Taranow, 359 Pa. 342, 344-45, 59 A. 2d 53, 54 (1948). Nevertheless, in light of current medical knowledge, I cannot subscribe to the broad implications drawn by the court below from Smith’s sweeping statement.