Wyo. Stat. » Wyo. Stat. / Title 06 - Crimes and Offenses / Chapter 1 - GENERAL PROVISIONS / Article 2 - LIABILITY
Wyoming Statutes

Wyo. Stat. § 6-1-203 (2026)

Battered woman syndrome.

✓ current as of May 2026
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(a) The "battered woman syndrome" is defined as a subset
under the diagnosis of Post-Traumatic Stress Disorder
established in the Diagnostic and Statistical Manual of Mental
Disorders III - Revised of the American Psychiatric Association.

     (b) If a person is charged with a crime involving the use
of force against another, and the person raises the affirmative
defense of self-defense, the person may introduce expert
testimony that the person suffered from the syndrome, to
establish the necessary requisite belief of an imminent danger
of death or great bodily harm as an element of the affirmative
defense, to justify the person's use of force.
Notes of Decisions
Cited in 14 cases, 1982–2015 · leading case: Witt v. State, 892 P.2d 132 (Wyo. 1995).
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Witt v. State, 892 P.2d 132 (Wyo. 1995). · cites it 27× “In her first claim of error, Witt contends the district court erroneously interpreted Wyo.Stat. § 6-1-203 (Cum.Supp.1994) and abused its discretion in excluding the expert testimony on her state of mind at the moment she shot Ayers.”
Duran v. State, 990 P.2d 1005 (Wyo. 1999). · cites it 16× “Wyo. Stat. Ann. § 6-1-203 (LEXIS 1999) is the Wyoming legislature's response to recognition of battered woman syndrome: (a) The "battered woman syndrome" is defined as a subset under the diagnosis of Post-Traumatic Stress Disorder established in the Diagnostic and Statistical…”
Jahnke v. State, 692 P.2d 911 (Wyo. 1984). · cites it 4× “" Section 6-1-203, W.S. 1977: "(a) A person is guilty of conspiracy to commit a crime if he agrees with one (1) or more persons to commit a crime and he or another person does an overt act to effect the object of the agreement.”
Gruwell v. State, 2011 WY 67 (Wyo. 2011). · cites it 4× “Wyo. Stat. Ann. § 6-1-203 . 5 There is no statutory exception for evidence regarding the typical behaviors of sex offenders.”
Chapman v. State, 2001 WY 25 (Wyo. 2001). · cites it 2× “Rejecting that assertion, we wrote that Wyo.Stat.Ann. § 6-1-203 had no relevance "other than, perhaps, to underscore that Battered Woman Syndrome is sufficiently developed to be the basis for expert testimony.”
Jahnke v. State, 682 P.2d 991 (Wyo. 1984). · cites it 2× “the time this offense was committed, provided: "(a) Whoever purposely and with premeditated malice, or in the perpetration of, or attempt to perpetrate any rape, sexual assault, arson, robbery or burglary, or by administering poison or causing the same to be done, kills any…”
Benjamin v. State, 2011 WY 147 (Wyo. 2011). · cites it 2× “Wyo. Stat. Ann. § 6-1-203 (LexisNexis 2011) provides as follows: (a) The "battered woman syndrome" is defined as a subset under the diagnosis of Post-Traumatic Stress Disorder established in the Diagnostic and Statistical Manual of Mental Disorders III-Revised of the American…”
Osborn v. State, 672 P.2d 777 (Wyo. 1983). · cites it 2× “Section 6-1-203, W.S.1977, Cum.Supp.1981: “(a) A person is guilty of conspiracy to commit a crime if he agrees with one (1) or more persons to commit a crime and he or another person does an overt act to effect the object of the agreement.”
Campbell v. State, 999 P.2d 649 (Wyo. 2000). · cites it 2× “s that she should be able to raise the affirmative defense of coercion and duress if the abuse she suffered caused her to believe that she was in imminent danger of death or serious bodily harm if she did not endanger her child's life or health by delaying medical care in…”
Trujillo v. State, 953 P.2d 1182 (Wyo. 1998). · cites it 4× “Trujillo also draws our attention to Wyo. Stat. § 6-1-203 (1997) which permits a defendant to use expert testimony on Battered Woman Syndrome in eases of self-defense.”
Terence James v. State, 2015 WY 83 (Wyo. 2015). · cites it 2× “She likened her situation to that of a battered woman raising self defense as an affirmative defense, which is specifically allowed by Wyo. Stat. Ann. § 6-1-203 (b). This Court concluded the battered woman statute applies only when a person is charged with a crime involving the…”
Schuler v. State, 668 P.2d 1333 (Wyo. 1983). · cites it 2× “1977, § 6-7-201), and did an overt act to effect the object of the agreement, in violation of W.S.1977, § 6-1-203, which is “COUNT II “and intentionally enter a building, to-wit: the Mountain Bell Phone Center store building, without the consent of the person in lawful…”
Show all 14 citing cases →
— Wyo. Stat. § 6-1-203(a) — 1 case
Jahnke v. State, 682 P.2d 991 (Wyo. 1984). “the time this offense was committed, provided: "(a) Whoever purposely and with premeditated malice, or in the perpetration of, or attempt to perpetrate any rape, sexual assault, arson, robbery or burglary, or by administering poison or causing the same to be done, kills any…”
— Wyo. Stat. § 6-1-203(b) — 1 case
Witt v. State, 892 P.2d 132 (Wyo. 1995). “In her first claim of error, Witt contends the district court erroneously interpreted Wyo.Stat. § 6-1-203 (Cum.Supp.1994) and abused its discretion in excluding the expert testimony on her state of mind at the moment she shot Ayers.”
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