diminished capacity defense (Michigan) · Go Syfert
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diminished capacity defense in Michigan

37 Michigan opinions name it 2 courts 1982–2026 18 in the last five years

The cases below were cited by Michigan courts in a sentence that names this issue. Sides come from how each citing opinion treated the case (Syfertize flag on that citation), so a case can appear on both: that is where the law is contested. A red or yellow chip is the case's own overall treatment.

Followed or applied (10)

CaseFollowedCited
People v. Carpentergreen
mich · 2001 · cited in 24 Michigan opinions naming this issue, 2008–2025
2 sentences

2025On appeal, defendant denies that his argument is that trial counsel was ineffective for failing to present a diminished-capacity defense, which is not a valid defense in Michigan, see People v Carpenter, 464 Mich 223, 235-237 ; 627 NW2d 276 (2001), but rather that trial counsel should have presented the evidence of his mental health history for an otherwise permissible purpose.

2025On appeal, defendant denies that his argument is that trial counsel was ineffective for failing to present a diminished-capacity defense, which is not a valid defense in Michigan, see People v Carpenter, 464 Mich 223, 235-237 ; 627 NW2d 276 (2001), but rather that trial counsel should have presented the evidence of his mental health history for an otherwise permissible purpose.

624
People v. Yostgreen
michctapp · 2008 · cited in 6 Michigan opinions naming this issue, 2020–2026
2 sentences

2025However, in -3- Carpenter, our Supreme Court held that a diminished-capacity defense is not viable under Michigan law: [B]y enacting a comprehensive statutory scheme setting forth the requirements for and the effects of asserting a defense based on either mental illness or mental retardation, the Legislature has signified its intent not to allow a defendant to introduce evidence of mental abnormalities short of legal insanity to avoid or reduce criminal responsibility by negating specific intent. [Id. at 226.] Several years later in People v Yost, 278 Mich App 341 ; 749 NW2d 753 (2008), this C

2025However, in -3- Carpenter, our Supreme Court held that a diminished-capacity defense is not viable under Michigan law: [B]y enacting a comprehensive statutory scheme setting forth the requirements for and the effects of asserting a defense based on either mental illness or mental retardation, the Legislature has signified its intent not to allow a defendant to introduce evidence of mental abnormalities short of legal insanity to avoid or reduce criminal responsibility by negating specific intent. [Id. at 226.] Several years later in People v Yost, 278 Mich App 341 ; 749 NW2d 753 (2008), this C

26
Fisher v. United Statesgreen
scotus · 1946 · cited in 2 Michigan opinions naming this issue, 2017–2017
2 sentences

2017See Carpenter, 464 Mich at 240-241 , citing Fisher v United States, 328 US 463 ; 66 S Ct 1318 ; 90 L Ed 1382 (1946).

2017See Carpenter, 464 Mich at 240-241 , citing Fisher v United States, 328 US 463 ; 66 S Ct 1318 ; 90 L Ed 1382 (1946).

22
People v. Abrahamgreen
michctapp · 2003 · cited in 2 Michigan opinions naming this issue, 2015–2024
2 sentences

2024See People v Abraham, 256 Mich App 265, 274 ; 662 NW2d 836 (2003).

2024See People v Abraham, 256 Mich App 265, 274 ; 662 NW2d 836 (2003).

12
People v. Lloydgreen
mich · 1999 · cited in 2 Michigan opinions naming this issue, 2001–2001
2 sentences

2001See, e.g., People v Lloyd, 459 Mich 433 ; 590 NW2d 738 (1999) (holding that defense counsel was not constitutionally ineffective for presenting a diminished ca pacity defense as opposed to a defense of legal insanity); People v Pickens, 446 Mich 298 ; 521 NW2d 797 (1994) (holding that the defendant was not prejudiced by counsel’s failure to pursue a diminished capacity defense); People v Griffin, 433 Mich 860 ; 444 NW2d 139 (1989) (remanding for a hearing on the defendant’s claim that trial counsel was ineffective for failing to explore defenses of diminished capacity and insanity).

2001See, e.g., People v Lloyd, 459 Mich 433 ; 590 NW2d 738 (1999) (holding that defense counsel was not constitutionally ineffective for presenting a diminished ca pacity defense as opposed to a defense of legal insanity); People v Pickens, 446 Mich 298 ; 521 NW2d 797 (1994) (holding that the defendant was not prejudiced by counsel’s failure to pursue a diminished capacity defense); People v Griffin, 433 Mich 860 ; 444 NW2d 139 (1989) (remanding for a hearing on the defendant’s claim that trial counsel was ineffective for failing to explore defenses of diminished capacity and insanity).

12
People v. Vaughngreen
mich · 2012 · cited in 1 Michigan opinions naming this issue, 2024–2024
2 sentences

2024See People v Vaughn, 491 Mich 642, 669 ; 821 NW2d 288 (2012).

2024See People v Vaughn, 491 Mich 642, 669 ; 821 NW2d 288 (2012).

11
Bethea v. United Statesgreen
dc · 1976 · cited in 1 Michigan opinions naming this issue, 2001–2001
2 sentences

2001Like the Supreme Court of Ohio, we decline to adopt an alternative defense to legal insanity "that could swallow up the insanity defense and its attendant commitment provisions." Wilcox, supra at 189 , 436 N.E.2d 523 . "[T]he concepts of both diminished capacity and insanity involve a moral choice by the community to withhold a finding of responsibility and its consequence of punishment." Bethea, supra at 90, n. 55 . [9] Accordingly, we hold that the insanity defense as established by the Legislature is the sole standard for determining criminal responsibility as it relates to mental illness o

2001Like the Supreme Court of Ohio, we decline to adopt an alternative defense to legal insanity “that could swallow up the insanity defense and its attendant commitment provisions.” Wilcox, supra at 189 . “[T]he concepts of both diminished capacity and insanity involve a moral choice by the community to withhold a finding of responsibility and its consequence of punishment.” Bethea, supra at 90, n 55 . 9 Accordingly, we hold that the insanity defense as established by the Legislature is the sole standard for determining criminal responsibility as it relates to mental illness or retardation. 10 De

11
United States v. Pohlot, Stephengreen
ca3 · 1987 · cited in 1 Michigan opinions naming this issue, 2001–2001
1 sentence

2001The recent circuit court opinions also focus on the exclusion of expert opinion evidence, not on the exclusion of all evidence of mental abnormality, including the defendant's own testimony." Pohlot, supra at 901, n. 12 . [13] MCL 768.21a. [14] MCL 768.36. [15] The insanity statute provides that legal insanity "[i]s an affirmative defense." MCL 768.21a.

11
State v. Wilcoxgreen
ohio · 1982 · cited in 1 Michigan opinions naming this issue, 2001–2001
2 sentences

2001Like the Supreme Court of Ohio, we decline to adopt an alternative defense to legal insanity "that could swallow up the insanity defense and its attendant commitment provisions." Wilcox, supra at 189 , 436 N.E.2d 523 . "[T]he concepts of both diminished capacity and insanity involve a moral choice by the community to withhold a finding of responsibility and its consequence of punishment." Bethea, supra at 90, n. 55 . [9] Accordingly, we hold that the insanity defense as established by the Legislature is the sole standard for determining criminal responsibility as it relates to mental illness o

2001See State v Wilcox, 70 Ohio St 2d 182; 436 NE2d 523 (1982); Arenella, The diminished capacity and diminished responsibility defenses: Two children of a doomed marriage, 77 Columbia L R 827, 830, n 16 (1977).

11
People v. Fieldsgreen
michctapp · 1975 · cited in 1 Michigan opinions naming this issue, 1993–1993
2 sentences

1993See People v Fields, 64 Mich App 166, 168, 172-173 ; 235 NW2d 95 (1975).

1993See People v Fields, 64 Mich App 166, 168, 172-173 ; 235 NW2d 95 (1975).

11

Distinguished, questioned or overruled (0)

CaseNegativeCited
No negative-treatment citations attached to this issue in Michigan. Read the followed side critically anyway.

Also cited on this issue (20)

CaseCitedYears
People v. Pickens green
mich · 1994
2 sentences

2022Cf. People v Pickens, 446 Mich 298, 330 ; 521 NW2d 797 (1994) (defense counsel’s failure to present a diminished- capacity defense reflected a strategic choice to focus instead on the insanity defense); People v Dunigan, 299 Mich App 579, 583-584 ; 831 NW2d 243 (2013) (theory of the defense precluded the need for the jury instruction at issue because “that instruction would have been inconsistent with, and potentially detrimental to, defendant’s theory that he was not the perpetrator and had been falsely accused by the victim”); People v Robinson, 154 Mich App 92, 94 ; 397 NW2d 229 (1986) (def

2022Cf. People v Pickens, 446 Mich 298, 330 ; 521 NW2d 797 (1994) (defense counsel’s failure to present a diminished- capacity defense reflected a strategic choice to focus instead on the insanity defense); People v Dunigan, 299 Mich App 579, 583-584 ; 831 NW2d 243 (2013) (theory of the defense precluded the need for the jury instruction at issue because “that instruction would have been inconsistent with, and potentially detrimental to, defendant’s theory that he was not the perpetrator and had been falsely accused by the victim”); People v Robinson, 154 Mich App 92, 94 ; 397 NW2d 229 (1986) (def

42001–2022
People v. Dunigan green
michctapp · 2013
2 sentences

2022Cf. People v Pickens, 446 Mich 298, 330 ; 521 NW2d 797 (1994) (defense counsel’s failure to present a diminished- capacity defense reflected a strategic choice to focus instead on the insanity defense); People v Dunigan, 299 Mich App 579, 583-584 ; 831 NW2d 243 (2013) (theory of the defense precluded the need for the jury instruction at issue because “that instruction would have been inconsistent with, and potentially detrimental to, defendant’s theory that he was not the perpetrator and had been falsely accused by the victim”); People v Robinson, 154 Mich App 92, 94 ; 397 NW2d 229 (1986) (def

2022Cf. People v Pickens, 446 Mich 298, 330 ; 521 NW2d 797 (1994) (defense counsel’s failure to present a diminished- capacity defense reflected a strategic choice to focus instead on the insanity defense); People v Dunigan, 299 Mich App 579, 583-584 ; 831 NW2d 243 (2013) (theory of the defense precluded the need for the jury instruction at issue because “that instruction would have been inconsistent with, and potentially detrimental to, defendant’s theory that he was not the perpetrator and had been falsely accused by the victim”); People v Robinson, 154 Mich App 92, 94 ; 397 NW2d 229 (1986) (def

32022–2022
People v. Robinson green
michctapp · 1986
2 sentences

2022Cf. People v Pickens, 446 Mich 298, 330 ; 521 NW2d 797 (1994) (defense counsel’s failure to present a diminished- capacity defense reflected a strategic choice to focus instead on the insanity defense); People v Dunigan, 299 Mich App 579, 583-584 ; 831 NW2d 243 (2013) (theory of the defense precluded the need for the jury instruction at issue because “that instruction would have been inconsistent with, and potentially detrimental to, defendant’s theory that he was not the perpetrator and had been falsely accused by the victim”); People v Robinson, 154 Mich App 92, 94 ; 397 NW2d 229 (1986) (def

2022Cf. People v Pickens, 446 Mich 298, 330 ; 521 NW2d 797 (1994) (defense counsel’s failure to present a diminished- capacity defense reflected a strategic choice to focus instead on the insanity defense); People v Dunigan, 299 Mich App 579, 583-584 ; 831 NW2d 243 (2013) (theory of the defense precluded the need for the jury instruction at issue because “that instruction would have been inconsistent with, and potentially detrimental to, defendant’s theory that he was not the perpetrator and had been falsely accused by the victim”); People v Robinson, 154 Mich App 92, 94 ; 397 NW2d 229 (1986) (def

32022–2022
People v. Mangiapane green
michctapp · 1978
2 sentences

1987People v Mangiapane, 85 Mich App 379, 395 ; 271 NW2d 240 (1978).

1987People v Mangiapane, 85 Mich App 379, 395 ; 271 NW2d 240 (1978).

31985–1987
People v. Ericksen green
michctapp · 2010
1 sentence

2025Id. effective assistance of counsel is denied.” People v Strong, 143 Mich App 442, 449 ; 372 NW2d 335 (1985). 17 We are aware that People v Madison, ___ Mich ___; 12 NW3d 440 (2024) (Docket No. 167120), is currently pending on leave granted before our Supreme Court and will address the question of whether Carpenter was correctly decided and, if not, whether it should be retained. -12- 2.

12025–2025
People v. LaVearn green
mich · 1995
2 sentences

2025People v LaVearn, 448 Mich 207, 216 ; 528 NW2d 721 (1995) (determining that a counsel “faced with a choice between two defenses with significant evidentiary problems” may elect to pursue one over the other).

2025People v LaVearn, 448 Mich 207, 216 ; 528 NW2d 721 (1995) (determining that a counsel “faced with a choice between two defenses with significant evidentiary problems” may elect to pursue one over the other).

12025–2025
People v. Strong green
michctapp · 1985
2 sentences

2025Id. effective assistance of counsel is denied.” People v Strong, 143 Mich App 442, 449 ; 372 NW2d 335 (1985). 17 We are aware that People v Madison, ___ Mich ___; 12 NW3d 440 (2024) (Docket No. 167120), is currently pending on leave granted before our Supreme Court and will address the question of whether Carpenter was correctly decided and, if not, whether it should be retained. -12- 2.

2025Id. effective assistance of counsel is denied.” People v Strong, 143 Mich App 442, 449 ; 372 NW2d 335 (1985). 17 We are aware that People v Madison, ___ Mich ___; 12 NW3d 440 (2024) (Docket No. 167120), is currently pending on leave granted before our Supreme Court and will address the question of whether Carpenter was correctly decided and, if not, whether it should be retained. -12- 2.

12025–2025
People v. Reed green
mich · 1996
2 sentences

2024See People v Leffew, 508 Mich 625 , 638; 975 NW2d 896 (2022) (stating that a defense lawyer is not ineffective for failing to advance a meritless argument); People v Reed, 453 Mich 685, 695 ; 556 NW2d 858 (1996) (stating that defense counsel cannot be faulted for failing to advance a legal argument that had not been recognized by any Michigan authority).

2024See People v Leffew, 508 Mich 625 , 638; 975 NW2d 896 (2022) (stating that a defense lawyer is not ineffective for failing to advance a meritless argument); People v Reed, 453 Mich 685, 695 ; 556 NW2d 858 (1996) (stating that defense counsel cannot be faulted for failing to advance a legal argument that had not been recognized by any Michigan authority).

12024–2024
People v. Ginther green
mich · 1973
1 sentence

2021We REMAND this case to the Jackson Circuit Court for an evidentiary hearing pursuant to People v Ginther, 390 Mich 436 (1973), regarding whether the defendant’s trial counsel rendered constitutionally ineffective assistance by: (1) failing to object under MRE 404(b) to the prosecutor’s questions during the cross-examination of the defendant, see People v Wilder, 502 Mich 57 (2018); (2) presenting a diminished capacity defense, see People v Carpenter, 464 Mich 223, 241 (2001); and (3) failing to investigate and pursue an insanity defense based on the defendant’s post-traumatic stress disorder.

12021–2021
People of Michigan v. Darrell John Wilder green
mich · 2018
1 sentence

2021We REMAND this case to the Jackson Circuit Court for an evidentiary hearing pursuant to People v Ginther, 390 Mich 436 (1973), regarding whether the defendant’s trial counsel rendered constitutionally ineffective assistance by: (1) failing to object under MRE 404(b) to the prosecutor’s questions during the cross-examination of the defendant, see People v Wilder, 502 Mich 57 (2018); (2) presenting a diminished capacity defense, see People v Carpenter, 464 Mich 223, 241 (2001); and (3) failing to investigate and pursue an insanity defense based on the defendant’s post-traumatic stress disorder.

12021–2021
People v. Durfee green
mich · 1886
2 sentences

2001The trial court refused to admit the evidence on the ground that the defendant had never raised an insanity defense and did not give the required statutory notice. 6 In reversing the defendant’s jury conviction, the Court of Appeals rejected the prosecution’s argument that allowing evidence of mental illness less than insanity as bearing on the defendant’s capacity to form the intent required to commit a particular crime would “sanction a subterfuge” avoiding the standards of the insanity defense enunciated by this Court in People v Durfee, 62 Mich 487 ; 29 NW 109 (1886). 7 The Court also disa

2001The trial court refused to admit the evidence on the ground that the defendant had never raised an insanity defense and did not give the required statutory notice. 6 In reversing the defendant’s jury conviction, the Court of Appeals rejected the prosecution’s argument that allowing evidence of mental illness less than insanity as bearing on the defendant’s capacity to form the intent required to commit a particular crime would “sanction a subterfuge” avoiding the standards of the insanity defense enunciated by this Court in People v Durfee, 62 Mich 487 ; 29 NW 109 (1886). 7 The Court also disa

12001–2001
State v. Mott green
ariz · 1997
2 sentences

2001See Compton, Expert witness testimony and the diminished capacity defense, 20 Am J Trial Advoc 381, 387-388, n. 63 (1996-1997); State v. Mott, 187 Ariz. 536, 555 , 931 P.2d 1046 (1997) (Feldman, J., dissenting).

2001See Compton, Expert witness testimony and the diminished capacity defense, 20 Am J Trial Advoc 381, 387-388, n 63 (1996-1997); State v Mott, 187 Ariz 536, 555; 931 P2d 1046 (1997) (Feldman, J., dissenting).

12001–2001
People v. Martin green
mich · 1971
2 sentences

2001In Martin, supra at 418, 192 N.W.2d 215 , we explained the "salient elements" of the Durfee test as follows: "1) whether defendant knew what he was doing was right or wrong; and 2) if he did, did he have the power, the will power, to resist doing the wrongful act?" [8] It apparently is well recognized that the diminished capacity defense originated in Scotland in 1867.

2001In Martin, supra at 418 , we explained the “salient elements” of the Durfee test as follows: “1) whether defendant knew what he was doing was right or wrong; and 2) if he did, did he have the power, the will power, to resist doing the wrongful act?” It apparently is well recognized that the diminished capacity defense originated in Scotland in 1867.

12001–2001
People v. Lynch green
michctapp · 1973
2 sentences

2001Instead, it was our Court of Appeals, in People v Lynch, 47 Mich App 8 ; 208 NW2d 656 (1973), that introduced to Michigan the diminished capacity defense.

2001Instead, it was our Court of Appeals, in People v Lynch, 47 Mich App 8 ; 208 NW2d 656 (1973), that introduced to Michigan the diminished capacity defense.

12001–2001
Strickland v. Washington green
scotus · 1984
2 sentences

1994The jury rejected such a finding when it rejected the guilty but mentally ill verdict. [9] I am sympathetic to the defendant's claim that because of attorney Graziotti's inadequacies, "he brought an aura of unprofessionalism that reflected so badly on the Appellant and his defense." However, the defendant has done no more to show prejudice than to make a bare allegation that "because of counsel's serious mistakes, he was substantially prejudiced thereby and but for same may have had a strong likelihood of acquittal." Id. [1] Strickland v Washington, 446 US 668 , 708; 104 S Ct 2052 ; 80 L Ed 2d

1994The jury rejected such a finding when it rejected the guilty but mentally ill verdict. [9] I am sympathetic to the defendant's claim that because of attorney Graziotti's inadequacies, "he brought an aura of unprofessionalism that reflected so badly on the Appellant and his defense." However, the defendant has done no more to show prejudice than to make a bare allegation that "because of counsel's serious mistakes, he was substantially prejudiced thereby and but for same may have had a strong likelihood of acquittal." Id. [1] Strickland v Washington, 446 US 668 , 708; 104 S Ct 2052 ; 80 L Ed 2d

11994–1994
People v. Jones green
michctapp · 1986
2 sentences

1987People v Jones, 151 Mich App 1, 5-6 ; 390 NW2d 189 (1986).

1987People v Jones, 151 Mich App 1, 5-6 ; 390 NW2d 189 (1986).

11987–1987
People v. Denton green
michctapp · 1984
2 sentences

1985Mangiapane, supra, p 395 ; People v Denton, 138 Mich App 568 ; 360 NW2d 245 (1984).

1985Mangiapane, supra, p 395 ; People v Denton, 138 Mich App 568 ; 360 NW2d 245 (1984).

11985–1985
People v. Atkins neutral
michctapp · 1982
2 sentences

1985MCL 768.20a(l); MSA 28.1043(1)(1), People v Atkins, 117 Mich App 430, 435-436 ; 324 NW2d 38 (1982); People v Mangiapane, 85 Mich App 379, 395 ; 271 NW2d 240 (1978).

1985MCL 768.20a(l); MSA 28.1043(1)(1), People v Atkins, 117 Mich App 430, 435-436 ; 324 NW2d 38 (1982); People v Mangiapane, 85 Mich App 379, 395 ; 271 NW2d 240 (1978).

11985–1985
People v. Blocker green
michctapp · 1973
1 sentence

1985This case is squarely within the Blocker, supra, rule.

11985–1985
People v. Conley green
cal · 1966
2 sentences

1982We are referred to People v Conley, 64 Cal 2d 310; 49 Cal Rptr 815; 411 P2d 911 (1966), and we are asked to adopt the diminished-capacity rule of that case.

1982We are referred to People v Conley, 64 Cal 2d 310; 49 Cal Rptr 815; 411 P2d 911 (1966), and we are asked to adopt the diminished-capacity rule of that case.

11982–1982

Statutes the citing opinions construe

MI § Mich. Comp. Laws § 750.316 (14) MI § Mich. Comp. Laws § 768.21a (14) MI § Mich. Comp. Laws § 750.110a (10) MI § Mich. Comp. Laws § 750.227b (9) MI § Mich. Comp. Laws § 768.20a (8) MI § Mich. Comp. Laws § 750.317 (7) MI § Mich. Comp. Laws § 750.83 (6) MI § Mich. Comp. Laws § 750.84 (6) MI § Mich. Comp. Laws § 769.12 (6) MI § Mich. Comp. Laws § 750.224f (5) MI § Mich. Comp. Laws § 768.36 (5) MI § Mich. Comp. Laws § 780.972 (5)

Counted by distinct opinions that both name this issue and are annotated to the section; sections every opinion cites regardless of issue are not filtered here, so read the counts against the total above.

Where else courts name it

CA 178 (1967–2026) PA 141 (1979–2026) WA 114 (1981–2026) NJ 56 (1985–2026) MI 37 (1982–2026) WV 27 (1983–2024) OH 24 (1982–2023) RI 21 (1980–2016) TX 21 (2005–2026) MO 19 (1981–2025) IA 18 (1986–2020) NC 17 (1997–2025) TN 13 (1993–2024) AZ 12 (1995–2024) MS 12 (1984–2023) AL 12 (1986–2016) VT 12 (1989–2021) IL 12 (1993–2024) FL 11 (1989–2024) KS 10 (1984–2012) AK 10 (1977–2007) NM 8 (1996–2025) NV 7 (1996–2026) LA 6 (1987–2007) NY 6 (1982–2006) MA 5 (1990–2025) MD 5 (1982–2012) MN 5 (1988–2008) UT 5 (1982–2015) DC 5 (1976–2020) MT 4 (1978–1981) WY 3 (1983–2020) VA 3 (1992–2023) WI 3 (1985–2002) OR 3 (1978–2020) NE 2 (1995–2018) SC 2 (2006–2010)

Opinions by the citing court's state. A doctrine retained in one state and abandoned in another shows up here as a year span that stalls.

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