diminished capacity defense in Pennsylvania

2026See e.g., Hutchinson, 25 A.3d at 312-13 (“We have consistently declined to hold that trial counsel was ineffective for failing to advance a defense that directly and irreconcilably conflicted with the accused's claims of innocence.”); Commonwealth v. Gibson, 951 A.2d at 1110, 1131 (Pa. 2008) (“[C]ounsel will not be held ineffective for failing to pursue a diminished capacity defense when the Appellant maintains his innocence throughout the trial.”); Commonwealth v. Williams, 846 A.2d 105, 112 (Pa. 2004) (“Moreover, even if counsel had thoroughly investigated Appellant's past, the presentation

2024“To establish a diminished capacity defense, a defendant must prove that his cognitive abilities of deliberation and premeditation were so compromised, by mental defect or voluntary intoxication, that he was unable to formulate the specific intent to kill.” Commonwealth v. Hutchinson, 25 A.3d 277, 312 (Pa. 2011).

2022“To establish a diminished capacity defense, a defendant must prove that his cognitive abilities of deliberation and premeditation were so compromised, by mental defect or voluntary intoxication, that he was unable to formulate the specific intent to kill.” Commonwealth Hutchinson, 25 A.3d 277, 312 (Pa. 2011) (citing Commonwealth v. Rainey, 928 A.2d 215, 237 (Pa. 2007), and Commonwealth v. Spotz, 896 A.2d 1191, 1218 (Pa. 2006)).

2020Moreover, “[c]ounsel’s strategic decision to seek acquittal rather than pursue a diminished capacity defense does not constitute ineffective assistance if there is a reasonable basis for the strategy chosen.” Commonwealth v. Spotz, 896 A.2d 1191, 1218 (Pa. 2006), (citation omitted).

2016Rather, “[t]o establish a diminished capacity defense, a defendant must prove that his cognitive abilities of deliberation and premeditation were so compromised, by mental defect or voluntary intoxication, that he was unable to formulate the specific intent to kill.” Id. (citing, among others, Commonwealth v. Blakeney, 946 A.2d 645, 653 (Pa. 2008) (“Intoxication, however, may only reduce murder to a lower degree if the evidence shows that the defendant was ‘overwhelmed to the point of losing his faculties and sensibilities.’”)). “[T]he Commonwealth must prove beyond a reasonable doubt that … a

1998See also Commonwealth v. Zettlemoyer, 500 Pa. 16, 28 , 454 A.2d 937, 943 (1982)(psychiatric testimony must speak to overall inability to formulate or carry out a plan or design; such testimony is irrelevant to a diminished capacity defense if it only goes to defendant’s irresistible impulse with respect to the particular crime).

2022“To establish a diminished capacity defense, a defendant must prove that his cognitive abilities of deliberation and premeditation were so compromised, by mental defect or voluntary intoxication, that he was unable to formulate the specific intent to kill.” Commonwealth Hutchinson, 25 A.3d 277, 312 (Pa. 2011) (citing Commonwealth v. Rainey, 928 A.2d 215, 237 (Pa. 2007), and Commonwealth v. Spotz, 896 A.2d 1191, 1218 (Pa. 2006)).

2020Furthermore, diagnosis with a personality disorder does not suffice to establish diminished capacity.” Additionally, the evidence must provide insight as to the defendant’s mental state at the time of the offense, “the only relevant time for a diminished capacity defense.” Commonwealth v. Spotz, 610 Pa. 17, 144 , 18 A.3d 244 , 319 -7- J-S58007-19 (2011) (citing Commonwealth v. Rainey, 593 Pa. 67 , 928 A.2d 215, 237 (2007) (requiring a defendant advancing a defense of diminished capacity based on mental defect to “establish [that he or she] had a mental defect at the time of [the] murder that a

2016Cf. Commonwealth v. Legg, 711 A.2d 430, 435 (Pa. 1998) (finding prejudice based upon trial counsel’s failure to present testimony in support of a diminished capacity defense at the defendant’s trial for first-degree murder because the evidence of the defendant’s specific intent to kill “was not so overwhelming” to result in a conclusion that the defendant was not prejudiced, and thus the grant of a new trial was appropriate to permit the trial court to weigh the 25 Contrary to the position taken by Chief Justice Saylor in his concurring opinion, the blood spatter and blood flow evidence would

2016Cf. Commonwealth v. Legg, 711 A.2d 430, 435 (Pa. 1998) (finding prejudice based upon trial counsel’s failure to present testimony in support of a diminished capacity defense at the defendant’s trial for first-degree murder because the evidence of the defendant’s specific intent to kill “was not so overwhelming” to result in a conclusion that the defendant was not prejudiced, and thus the grant of a new trial was appropriate to permit the trial court to weigh the 25 Contrary to the position taken by Chief Justice Saylor in his concurring opinion, the blood spatter and blood flow evidence would

2017"In asserting a diminished capacity defense, a defendant is attempting to prove that he was incapable of forming the specific intent to kill; if the defendant is successful, first degree murder is mitigated to third degree.” Commonwealth v. Travaglia, 541 Pa. 108 , 661 A.2d 352 , 359 n.10 (1995) (emphasis in original), ce rt. denied, 516 U.S. 1121 , 116 S.Ct. 931 , 133 L.Ed.2d 858 (1996). 3 .

2017"In asserting a diminished capacity defense, a defendant is attempting to prove that he was incapable of forming the specific intent to kill; if the defendant is successful, first degree murder is mitigated to third degree.” Commonwealth v. Travaglia, 541 Pa. 108 , 661 A.2d 352 , 359 n.10 (1995) (emphasis in original), ce rt. denied, 516 U.S. 1121 , 116 S.Ct. 931 , 133 L.Ed.2d 858 (1996). 3 .

2026See e.g., Hutchinson, 25 A.3d at 312-13 (“We have consistently declined to hold that trial counsel was ineffective for failing to advance a defense that directly and irreconcilably conflicted with the accused's claims of innocence.”); Commonwealth v. Gibson, 951 A.2d at 1110, 1131 (Pa. 2008) (“[C]ounsel will not be held ineffective for failing to pursue a diminished capacity defense when the Appellant maintains his innocence throughout the trial.”); Commonwealth v. Williams, 846 A.2d 105, 112 (Pa. 2004) (“Moreover, even if counsel had thoroughly investigated Appellant's past, the presentation

2020Williams, 980 A.2d 510, 527 (Pa. 2009); Commonwealth v. Gibson, 951 A.2d 1110, 1131 (Pa. 2008); Commonwealth v. Spotz, 896 A.2d 1191, 1218 (Pa. 2006) (“Absent an admission from [the defendant] that he had shot and killed [the victim], trial -4- J-S33020-20 counsel could not have presented a diminished capacity defense.”).

2019Id. - 10 - J-S50005-19 Moreover, a diminished capacity defense requires extensive psychiatric testimony “establishing a defendant suffered from one or more mental disorders which prevented him from formulating the specific intent to kill.” Commonwealth v. Cuevas, 832 A.2d 388, 393 (Pa. 2003).

2012Nevertheless, to support a diminished capacity defense, Appellant would have had to present “extensive psychiatric testimony establishing [that she] suffered from one or more mental disorders which prevented [her] from formulating the specific intent to kill.” Commonwealth v. Cuevas, 574 Pa. 409, 418 , 832 A.2d 388, 393 (2003).

2020Williams, 602 Pa. 360 , 980 A.2d 510, 527 (2009); [C]ommonwealth v. [G]ibson, 597 PA. 402, 951 [A].2d 1110, 1131 (2008); Commonwealth v. Spotz, 587 Pa. 1 , 896 A.2d 1191, 1218 (2006) (“Absent an admission from [the defendant] that he had shot and killed [the victim], trial counsel could not have presented a diminished capacity defense.”)[.] If a defendant does not admit that he killed the victim, but rather advances an innocence defense, then evidence on diminished capacity is inadmissible.

2020Williams, 602 Pa. 360 , 980 A.2d 510, 527 (2009); [C]ommonwealth v. [G]ibson, 597 PA. 402, 951 [A].2d 1110, 1131 (2008); Commonwealth v. Spotz, 587 Pa. 1 , 896 A.2d 1191, 1218 (2006) (“Absent an admission from [the defendant] that he had shot and killed [the victim], trial counsel could not have presented a diminished capacity defense.”)[.] If a defendant does not admit that he killed the victim, but rather advances an innocence defense, then evidence on diminished capacity is inadmissible.

2026See e.g., Hutchinson, 25 A.3d at 312-13 (“We have consistently declined to hold that trial counsel was ineffective for failing to advance a defense that directly and irreconcilably conflicted with the accused's claims of innocence.”); Commonwealth v. Gibson, 951 A.2d at 1110, 1131 (Pa. 2008) (“[C]ounsel will not be held ineffective for failing to pursue a diminished capacity defense when the Appellant maintains his innocence throughout the trial.”); Commonwealth v. Williams, 846 A.2d 105, 112 (Pa. 2004) (“Moreover, even if counsel had thoroughly investigated Appellant's past, the presentation

2020Williams, 846 A.2d 105, 112 (Pa. 2004) (“[E]ven if counsel had thoroughly investigated [the appellant’s] past, the presentation of a diminished capacity defense would have directly contradicted [the appellant’s] assertions that someone else had committed the crime, and thus would not have been an available defense.”).

2024Moreover, to the extent Appellant’s claim implicates the affirmative defense of diminished capacity, the defense, “whether grounded in mental defect or voluntary intoxication, is an extremely limited defense available only to defendants who admit criminal liability but contest the degree of culpability - 16 - J-S41009-24 based upon an inability to formulate the specific intent to kill.” Sanchez, 82 A.3d at 977 ; see also Commonwealth v. McCullum, 738 A.2d 1007, 1009 (Pa. 1999) (“When asserting a diminished capacity defense to first[-]degree murder, a defendant attempts to negate the element of

2017This case is akin to Commonwealth v. McCullum, 558 Pa. 590, 596 , 738 A.2d 1007, 1010 (1999), where our Supreme Court held that a diminished capacity defense was not established because the expert "made no mention of [the defendant's] cognitive functions of deliberation and premeditation at the time of the murder or of his ability - or inability - to formulate the specific intent to kill." Similarly, as aforementioned, the psychological expert in this case did not provide an opinion on this salient issue.

2021See Commonwealth v. Mason, 634 Pa. 359, 408 , 130 A.3d 601, 630 (2015) (stating: “To establish a diminished capacity defense, a defendant must prove that his cognitive abilities of deliberation and premeditation were so compromised, by mental defect or voluntary intoxication, that he was unable to formulate the specific intent to kill”).

2021See Commonwealth v. Mason, 634 Pa. 359, 408 , 130 A.3d 601, 630 (2015) (stating: “To establish a diminished capacity defense, a defendant must prove that his cognitive abilities of deliberation and premeditation were so compromised, by mental defect or voluntary intoxication, that he was unable to formulate the specific intent to kill”).

2019See Commonwealth v. Saranchak, 866 A.2d 292, 297-298 (Pa. 2005). 6 In that appeal, the Supreme Court rejected Saranchak’s challenges to trial counsel’s ineffectiveness for failing to: (1) investigate the possibility of presenting a diminished capacity defense; (2) seek suppression of both a statement he made to police and a statement he made to a caseworker; (3) object to his co-defendant’s invocation of the Fifth Amendment during cross- examination; (4) investigate his background for potential mitigating evidence during the penalty phase; (5) seek an evaluation of his mental health condition;

2017"The defense of diminished capacity, whether grounded in mental defect or involuntary intoxication, is an extremely limited defense available only to defendants who admit criminal liability but contest the degree of 10 culpability based upon an inability to form the specific intent to kill." Commonwealth v. Sanchez, 82 A.3d 943, 977 (Pa. 2013) (citation omitted). ''By asserting a diminished capacity defense, a defendant attempts to prove that he is incapable of forming the specific intent to kill." Commonwealth v. Saranchak, 866 A.2d 292, 299 (Pa. 2005).

2019See, e.g. , Commonwealth v. Walzack , 468 Pa. 210 , 220-21, 360 A.2d 914 , 919-20 (1976) (discussing the "irresistible impulse" standard as the basis for an insanity defense and how it differs from other tests, as well as the diminished capacity defense to a charge of first-degree murder); Commonwealth v. Markman , 591 Pa. 249 , 283, 916 A.2d 586 , 606 (2007) (delineating the basis for a jury charge on the defense of duress); Commonwealth v. Heatherington , 477 Pa. 562 , 569, 385 A.2d 338 , 341 (1978) (concluding that a general beyond-a-reasonable-doubt instruction was insufficient to inform t

2019See, e.g. , Commonwealth v. Walzack , 468 Pa. 210 , 220-21, 360 A.2d 914 , 919-20 (1976) (discussing the "irresistible impulse" standard as the basis for an insanity defense and how it differs from other tests, as well as the diminished capacity defense to a charge of first-degree murder); Commonwealth v. Markman , 591 Pa. 249 , 283, 916 A.2d 586 , 606 (2007) (delineating the basis for a jury charge on the defense of duress); Commonwealth v. Heatherington , 477 Pa. 562 , 569, 385 A.2d 338 , 341 (1978) (concluding that a general beyond-a-reasonable-doubt instruction was insufficient to inform t

2017The mere fact of intoxication does not give rise to a diminished capacity defense. . . . ; Commonwealth v. Blakeney, 596 Pa. 510 , 946 A.2d 645, 653 (2008) (requiring that a defendant show that he was “overwhelmed to the point of losing his faculties and sensibilities” to prove a voluntary intoxication defense).

2016Rather, “[t]o establish a diminished capacity defense, a defendant must prove that his cognitive abilities of deliberation and premeditation were so compromised, by mental defect or voluntary intoxication, that he was unable to formulate the specific intent to kill.” Id. (citing, among others, Commonwealth v. Blakeney, 946 A.2d 645, 653 (Pa. 2008) (“Intoxication, however, may only reduce murder to a lower degree if the evidence shows that the defendant was ‘overwhelmed to the point of losing his faculties and sensibilities.’”)). “[T]he Commonwealth must prove beyond a reasonable doubt that … a

2022See id. (“[D]iagnosis with a personality disorder does not suffice to establish diminished capacity.”); Commonwealth v. Vandivner, 962 A.2d 1170, 1183 (Pa. 2009) (“[P]sychiatric evidence that a defendant lacked the ability to control his actions or that he acted impulsively is irrelevant and inadmissible on the issue of the defendant's specific intent to kill.”) (citation omitted). -8- J-S27035-21 Even though Dr. Su’s testimony would not support a diminished capacity defense, Appellant argued that the psychiatrist’s diagnosis of Appellant with major depressive disorder and psychosis would be “

2022See id. (“[D]iagnosis with a personality disorder does not suffice to establish diminished capacity.”); Commonwealth v. Vandivner, 962 A.2d 1170 , 1183 (Pa. 2009) (“[P]sychiatric evidence that a defendant lacked the ability to control his actions or that he acted impulsively is irrelevant and inadmissible on the issue of the defendant's specific intent to kill.”) (citation omitted). -8- J-S27035-21 Even though Dr. Su’s testimony would not support a diminished capacity defense, Appellant argued that the psychiatrist’s diagnosis of Appellant with major depressive disorder and psychosis would be

2009“Furthermore, personality disorders or schizoid or paranoid diagnoses are not relevant to a diminished capacity defense.” Id. ¶ 35 Upon review of the report, Dr. Schneider found that Ventura suffered from “substance abuse, adjustment disorder, antisocial personality features and depressive features.” As these diagnoses are personality disorders, the trial court correctly found them irrelevant and precluded them from trial. ¶ 36 We turn now to Ventura’s argument pertaining to Dr. Arden.

1995Further, Pennsylvania’s version of the diminished capacity defense applies only to evidence affecting “cognitive functions necessary to formulate a specific intent.” Id., 499 Pa. 106, 114 , 451 A.2d 1344, 1347 (1982).

2023She contended that trial counsel “repeatedly ignored the admissible evidence tending to establish a defense to homicide because he did not understand the limited defense of diminished capacity.” Id. ¶¶ 56-58 (recounting that a diminished capacity defense requires concession of general criminal liability, and it only applies to reduce first degree murder to third by disproving that the defendant premeditated the killing) (citing Commonwealth v. Paolello, 665 A.2d 439, 445 (Pa. 1995); Commonwealth v. Bomar, 826 A.2d 831 (Pa. 2003)).

2023She contended that trial counsel “repeatedly ignored the admissible evidence tending to establish a defense to homicide because he did not understand the limited defense of diminished capacity.” Id. ¶¶ 56-58 (recounting that a diminished capacity defense requires concession of general criminal liability, and it only applies to reduce first degree murder to third by disproving that the defendant premeditated the killing) (citing Commonwealth v. Paolello, 665 A.2d 439, 445 (Pa. 1995); Commonwealth v. Bomar, 826 A.2d 831 (Pa. 2003)).

2023Furthermore, “[e]vidence that the defendant lacked the ability to control his or her actions or acted impulsively is irrelevant to specific intent to kill, and thus is not admissible to support a diminished capacity defense.” Id. “[D]iagnosis with a personality disorder does not suffice to establish - 14 - J-S31011-23 diminished capacity.” Id. “[T]he authority to concede criminal liability and to authorize the presentation of a diminished capacity defense rests solely with the accused.” Id. at 313 (emphasis omitted), citing, Commonwealth v. Weaver, 457 A.2d 505, 506-507 (Pa. 1983).

2006Weaver, 457 A.2d at 506 . “[C]ounsel’s strategic decision to seek acquittal rather than pursue a diminished capacity defense does not constitute ineffective assistance if there is a reasonable basis for the strategy chosen.” Commonwealth v. James Jones, 539 Pa. 222 , 651 A.2d 1101, 1109 (1994).

2023Commonwealth v. Bracey, 795 A.2d 935, 942-943 (Pa. 2001) (stating, “[trial] counsel was not required to disregard the findings of his expert and continue to consult experts, at the expense of limited judicial resources, until he found one willing to testify that [Bracey] was organically brain damaged or manifested some kind of major mental illness”); see also Commonwealth v. Sepulveda, 55 A.3d 1108, 1122 (Pa. 2012) (stating that, - 26 - J-S31011-23 a court, in assessing trial counsel’s performance in the context of a ineffectiveness claim, must be careful to assess that performance “without th

2019Commonwealth v. Sepulveda, 55 A.3d 1108, 1122 (Pa. 2012) (citation omitted).

2023Commonwealth v. Hutchinson, 25 A.3d 277, 312 (Pa. 2011) (citations omitted and formatting altered); see also Commonwealth v. Ventura, 975 A.2d 1128, 1141 (Pa. Super. 2009) (explaining that “personality disorders or -9- J-S39032-22 schizoid or paranoid diagnoses are not relevant to a diminished capacity defense” (citation omitted)).

2023Id. (citations omitted and emphases added); see also Commonwealth v. Ventura, 975 A.2d 1128, 1141 (Pa. Super. 2009) (explaining that “personality disorders or schizoid or paranoid diagnoses are not relevant to a diminished capacity defense” (citation omitted)).

2023She contended that trial counsel “repeatedly ignored the admissible evidence tending to establish a defense to homicide because he did not understand the limited defense of diminished capacity.” Id. ¶¶ 56-58 (recounting that a diminished capacity defense requires concession of general criminal liability, and it only applies to reduce first degree murder to third by disproving that the defendant premeditated the killing) (citing Commonwealth v. Paolello, 665 A.2d 439, 445 (Pa. 1995); Commonwealth v. Bomar, 826 A.2d 831 (Pa. 2003)).

2023She contended that trial counsel “repeatedly ignored the admissible evidence tending to establish a defense to homicide because he did not understand the limited defense of diminished capacity.” Id. ¶¶ 56-58 (recounting that a diminished capacity defense requires concession of general criminal liability, and it only applies to reduce first degree murder to third by disproving that the defendant premeditated the killing) (citing Commonwealth v. Paolello, 665 A.2d 439, 445 (Pa. 1995); Commonwealth v. Bomar, 826 A.2d 831 (Pa. 2003)).

2006Commonwealth v. Fletcher, 580 Pa. 403 , 861 A.2d 898 (2004); Commonwealth v. Hanible, 575 Pa. 255 , 836 A.2d 36 (2003), cert. denied, 543 U.S. 835 , 125 S.Ct. 248 , 160 L.Ed.2d 55 (2004). [W]hen asserting a diminished capacity defense to first degree murder, a defendant attempts to negate the element of specific intent to kill and, if successful, first degree murder is reduced to third degree murder.

2006Commonwealth v. Fletcher, 580 Pa. 403 , 861 A.2d 898 (2004); Commonwealth v. Hanible, 575 Pa. 255 , 836 A.2d 36 (2003), cert. denied, 543 U.S. 835 , 125 S.Ct. 248 , 160 L.Ed.2d 55 (2004). [W]hen asserting a diminished capacity defense to first degree murder, a defendant attempts to negate the element of specific intent to kill and, if successful, first degree murder is reduced to third degree murder.

2024Further, “[e]vidence that the accused ingested alcohol or other intoxicating drug—without more—does not warrant a voluntary intoxication instruction.” Commonwealth v. Padilla, 80 A.3d 1238, 1363 (Pa. 2013).

2020The Court further noted that while the trial court instructed the jury “there was no evidence to support a diminished capacity defense based solely on drug and alcohol consumption,” the “court’s instructions explicitly allowed -9- J-S03018-20 the jury to consider the testimony regarding voluntary intoxication.” Id. at 1268 .

2004On direct appeal, this Court considered and rejected Appellant's arguments that his "counsel was ineffective for allegedly failing to investigate whether Appellant had used drugs in the past, whether Appellant was under the influence of drugs at the time of the murder and whether Appellant had a history of psychological problems," Uderra, 550 Pa. at 400 , 706 A.2d at 339-40 , and that counsel's stewardship was lacking in his failure to present a diminished capacity defense.

2004On direct appeal, this Court considered and rejected Appellant's arguments that his "counsel was ineffective for allegedly failing to investigate whether Appellant had used drugs in the past, whether Appellant was under the influence of drugs at the time of the murder and whether Appellant had a history of psychological problems," Uderra, 550 Pa. at 400 , 706 A.2d at 339-40 , and that counsel's stewardship was lacking in his failure to present a diminished capacity defense.

2017"In asserting a diminished capacity defense, a defendant is attempting to prove that he was incapable of forming the specific intent to kill; if the defendant is successful, first degree murder is mitigated to third degree.” Commonwealth v. Travaglia, 541 Pa. 108 , 661 A.2d 352 , 359 n.10 (1995) (emphasis in original), ce rt. denied, 516 U.S. 1121 , 116 S.Ct. 931 , 133 L.Ed.2d 858 (1996). 3 .

2009In Commonwealth v. Legg, 551 Pa. 437 , 711 A.2d 430, 433 (1998), this Court outlined the parameters of a diminished capacity defense: Diminished capacity, however, is an extremely limited defense. [Commonwealth v.] Travaglia [, 541 Pa. 108 , 661 A.2d 352 (1995), cert. denied, 516 U.S. 1121 , 116 S.Ct. 931 , 133 L.Ed.2d 858 (1996) ].