possible insanity defense (Texas) · Go Syfert
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possible insanity defense in Texas

7 Texas opinions name it 2 courts 1997–2025 2 in the last five years

The cases below were cited by Texas 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 (7)

CaseFollowedCited
Collier v. Stategreen
texcrimapp · 2009 · cited in 1 Texas opinions naming this issue, 2025–2025
1 sentence

2025See Rompilla, 545 U.S. at 383 (counsel’s failure to review a relevant file that was readily available constituted an unreasonable investigation); Ex parte Imoudu, 284 S.W.3d at 870 (counsel’s failure to request available jail records that would have shown applicant was suffering from mental health problems constituted an unreasonable investigation).

11
Rompilla v. Beardred
scotus · 2005 · cited in 1 Texas opinions naming this issue, 2025–2025
1 sentence

2025See Rompilla, 545 U.S. at 383 (counsel’s failure to review a relevant file that was readily available constituted an unreasonable investigation); Ex parte Imoudu, 284 S.W.3d at 870 (counsel’s failure to request available jail records that would have shown applicant was suffering from mental health problems constituted an unreasonable investigation).

11
Anderson v. Johnsongreen
ca5 · 2003 · cited in 1 Texas opinions naming this issue, 2015–2015
1 sentence

2015See also Anderson v. Johnson, 338 F.3d 382, 392 (5th Cir. 2003) (concluding that the defense attorney's failure to interview eyewitness rose to the level of constitutionally deficient performance); Hawkman v. Parratt, 661 F.2d 1161 (8th Cir. 1981) (the defendant received ineffective assistance of counsel where his attorney did not interview the three eyewitnesses to the crime). 6. and investigate potential defenses, both factual and legal.. i. McCoy v. Wainwright, 804 F.2d 1196, 1198 (11th Cir. 1986) (remanding the cause for an evidentiary hearing to determine whether defense counsel's failure

11
Ex Parte Briggsgreen
texcrimapp · 2005 · cited in 1 Texas opinions naming this issue, 2015–2015
1 sentence

2015App. 2009) (concluding counsel had a duty to investigate a possible insanity defense where several individuals had expressed concern regarding defendant’s mental state and defendant acted erratically when attorneys met with him); Briggs, 187 S.W.3d at 468-69 (concluding counsel was ineffective where counsel failed to seek funds from trial court to hire an expert witness to present a clearly evident viable defense that defendant’s actions did not cause her son’s death).

11
Otis Darnell Thomas v. A.L. Lockhart, Director of Arkansas Department of Correctiongreen
ca8 · 1984 · cited in 1 Texas opinions naming this issue, 2015–2015
1 sentence

2015Thomas v. Lockhart, 738 F.2d 304, 308-09 (8th Cir. 1984) (faulting defense counsel for not investigating the seriousness of the defendant's mental problems); 7.

11
Robert McCoy v. Louie L. Wainwrightgreen
ca11 · 1986 · cited in 1 Texas opinions naming this issue, 2015–2015
1 sentence

2015See also Anderson v. Johnson, 338 F.3d 382, 392 (5th Cir. 2003) (concluding that the defense attorney's failure to interview eyewitness rose to the level of constitutionally deficient performance); Hawkman v. Parratt, 661 F.2d 1161 (8th Cir. 1981) (the defendant received ineffective assistance of counsel where his attorney did not interview the three eyewitnesses to the crime). 6. and investigate potential defenses, both factual and legal.. i. McCoy v. Wainwright, 804 F.2d 1196, 1198 (11th Cir. 1986) (remanding the cause for an evidentiary hearing to determine whether defense counsel's failure

11
Alcott v. Stategreen
texcrimapp · 2001 · cited in 1 Texas opinions naming this issue, 2005–2005
1 sentence

2005Alcott v. State , 51 S.W.3d 596, 601 (Tex. Crim.

11

Distinguished, questioned or overruled (0)

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

Also cited on this issue (5)

CaseCitedYears
Thompson v. State green
texcrimapp · 1999
1 sentence

2022Id. 3 Discussion Appellant first contends that trial counsel provided ineffective assistance of counsel because he failed to confer with Appellant and investigate his mental health for his competency to stand trial and a possible insanity defense.

12022–2022
Woods v. State green
texapp · 2001
1 sentence

2015Id. at 837-38 .

12015–2015
Kenneth Hawkman v. Robert Parratt, Warden, Nebraska Penal and Correctional Complex green
ca8 · 1981
1 sentence

2015See also Anderson v. Johnson, 338 F.3d 382, 392 (5th Cir. 2003) (concluding that the defense attorney's failure to interview eyewitness rose to the level of constitutionally deficient performance); Hawkman v. Parratt, 661 F.2d 1161 (8th Cir. 1981) (the defendant received ineffective assistance of counsel where his attorney did not interview the three eyewitnesses to the crime). 6. and investigate potential defenses, both factual and legal.. i. McCoy v. Wainwright, 804 F.2d 1196, 1198 (11th Cir. 1986) (remanding the cause for an evidentiary hearing to determine whether defense counsel's failure

12015–2015
Strickland v. Washington green
scotus · 1984
2 sentences

1997In Strickland v. Washington, 466 U.S. 668 , 104 S.Ct. 2052 , 80 L.Ed.2d 674 (1984), the United States Supreme Court enunciated a test for determining whether a defendant received ineffective assistance of counsel, which the Texas Court of Criminal Appeals soon adopted.

1997In Strickland v. Washington, 466 U.S. 668 , 104 S.Ct. 2052 , 80 L.Ed.2d 674 (1984), the United States Supreme Court enunciated a test for determining whether a defendant received ineffective assistance of counsel, which the Texas Court of Criminal Appeals soon adopted.

11997–1997
Ex Parte Duffy green
texcrimapp · 1980
2 sentences

1997To support his argument, Gottson relies on Ex Parte Duffy, 607 S.W.2d 507 (Tex.Crim.App. 1980) and claims it is directly on point.

1997To support his argument, Gottson relies on Ex Parte Duffy, 607 S.W.2d 507 (Tex.Crim.App.1980) and claims it is directly on point.

11997–1997

Where else courts name it

TX 7 (1997–2025) IL 6 (1975–2023) NY 4 (1996–2010) DC 4 (1979–2024) GA 2 (1991–2024) AL 2 (1996–2006) PA 2 (1978–2023) VA 2 (2016–2016)

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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