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ID92 1
Murray A. StrausFamily Research Laboratory, University of New HampshireDurham, NH 03824 603-862-2594 [email protected]
Website: http://pubpages.unh.edu/~mas2
• Presented at the International Association of Mental Health Services annual meeting, Vancouver, BC, Canada, 26 May 2010• Other publications on this and related issues can be downloaded from http//:www.pubpages.unh.edu/~mas2• The work was supported by National Institute of Mental Health grant T32MH15161 and by the University of New Hampshire
MENTAL HEALTH AND VIOLENCE BETWEEN MARITAL AND DATING PARTNERS ACROSS THE LIFE SPAN AND IN 32 NATIONS
ID92 2
QUESTIONS TO BE ADDRESSED1. What is the prevalence of physical assault on partners
A. Over the life courseB. By men and womenC. In economically developed and developing nations?
2. To what extent are mental health problems a risk factor for partner violence?
3. Is the relation of mental health problems to partner assault different:• For men and women?• In economically developed and developing nations?
4. What are the implications for prevention and treatment of physical violence against partners?
A. Answer using results of several studies, but especially theInternational Dating Violence Study
ID92 3
QUESTION 1
What is the prevalence of physical assault on partners(“Partner violence” or PV from here on)
A. By men and womenB. Over the life courseC. In economically developed and developing nations?
All data is on perpetration
PHYSICAL ASSAULT SCALEOf The Revised Conflict Tactics Scales *
Minor Physical Assault: • Threw something at partner that could hurt• Twisted my partner’s arm or hair • Pushed or shoved my partner• Grabbed my partner• Slapped my partner
Severe Physical Assault:• Punched or hit my partner with something that could hurt• Choked my partner• Slammed my partner against a wall• Beat up my partner• Burned or scalded my partner• Kicked my partner • Used a knife or gun on my partner
Alpha: By participant - Males = .786, Females = .774, Total = .777 By partner - Males = .785, Females = .802, Total = .797
* For papers on this test, see http://pubpages.unh.edu/~mas2ID92
4
ID92 5
Table 1. Ten Examples of the More Than 200 Studies Showing Gender Symmetry in Perpetration of Physical. Assault
Study Severity Of Assault
Perpetrator
Male Female
Canadian National Survey (Lupri, 1990) Minor Severe
17.8%10.1%
23.3%12.9%
Canadian General Social Survey (1999) Overall rate 7.0% 8.0%\
British Crime Survey (1996) Overall rate
4.2% 4.1%
National Co-morbidity Study (Kessler, 2001) Minor Severe
17.4%6.5%
17.7%6.2%
National Alcohol and Family Violence Survey (Straus, 1995) Overall rate Severe
9.1% 1.9%
9.5% 4.5%
Dunedin Health and Development Study (US Dept of justice 1999) Overall rate 27.0 % 34.0%
National Violence Against Women Survey (Tjaden & Thoennes, 2000) Overall rate 1.3% 0.9%
Youth Risk Behavior Survey (Centers For Disease Control, 2006) Overall rat 8.8% 8.9%
National Youth Survey (Wofford-Mihalic, Elliott, & Menard,,1994). Overall Severe
20.2% 5.7%
34.1% 3.8%
% of Emergency room visits for PV (Annals of Emergency Medicine) 19.0% 20.0%
ID92 6
EVEN IN MALE-DOMINANT NATIONS,MORE GIRLS HIT PARTNERS THAN BOYS
• World Health Organization - Global School-based Health Survey• Students 13 to 15 years old• Asked if they had been hit, slapped or hurt on purpose by a boyfriend
or girlfriend in the past 12 months Percent “Yes”
Girls BoysJordan 15 29 Namibia 9 16 Swaziland 6 8 Zambia ` 18 23
Global School-based Health Survey. Geneva: World Health Organization 2006 http://www.cdc.gov/gshs or http://www.who.int/school_youth_health/gshs This data has now been removed from the WHO files.
ID92 7
THE INTERNATIONAL DATING VIOLENCE STUDY
http://pubpages.unh.edu/~mas2/ID.htm
17,404 Students At 68 Universities
In 32 Nations
All Major World Regions
Convenience Samples Questionnaire Completed In Class
Analyses Control For And/Or Examines Interactions With:
* Gender and Age * Score on Social Desirability
Response set scale * Other controls as needed for specific
analyses
VALIDITY OF THE DATA• Concurrent validity: correlated with
recognized international statistics
• Construct Validity: Show in many published papers
ID92 8
ASSAULT, TOTAL - BY PARTNER % in rank order of national context (CTATPP_1J)
Median: Total = 25.0%, Males = 24.8%, Females = 26.2%, F% of M = 106%
High Half Of Nations Low Half Of Nations
TotalTotal Male Feml TotalTotal Male Feml
Iran 41.041.0 43.0 40.0 South Korea 24.724.7 19.5 28.3
Mexico 39.539.5 21.2 39.0 Lithuania 24.424.4 18.5 27.4
India 35.835.8 40.9 34.2 Germany 24.324.3 26.4 23.4
Great BritainGreat Britain 33.333.3 33.9 33.1 Venezuela 24.124.1 23.5 24.5
Tanzania 33.133.1 29.2 37.2 Canada 23.123.1 21.8 23.6
South Africa 33.033.0 28.6 33.3 Australia 22.722.7 28.6 21.5
New Zealand 30.830.8 35.7 29.4 Guatemala 22.722.7 20.9 24.7
Greece 30.330.3 34.5 29.0 Hungary 21.721.7 27.5 19.1
China -Taiwan 29.029.0 17.9 32.5 Brazil 20.420.4 16.7 22.2
Belgium 28.228.2 25.0 29.1 Singapore 18.518.5 13.4 20.8
Russia 28.028.0 29.2 27.1 Switzerland 17.717.7 23.3 16.0
Romania 27.927.9 41.7 26.4 Japan 17.317.3 19.4 15.5
United StatesUnited States 27.927.9 29.1 27.3 Sweden 16.916.9 22.7 15.1
China 27.027.0 24.7 28.4 Malta 16.516.5 31.8 12.3
China-Hong K 25.425.4 24.1 26.0 Portugal 13.613.6 11.9 14.5
Netherlands 25.225.2 31.3 24.3 Israel 12.612.6 15.8 11.9
ID92 9
ASSAULT RATE High everywhere but also big differences between nations
Percent of women who assault partner is similar to the percent of men in all nations
ASSAULT, SEVERESEVERE - BY PARTNER % in rank order of national context (CTASPP_1) Median: Total = 9.1%, Males = 9.1%, Females = 8.5%, F% of M = 93%
High Half Of Nations Low Half Of Nations
TotalTotal Male Feml TotalTotal Male Feml
Tanzania 17.117.1 12.4 12.9 Russia 9.19.1 8.2 2.5
Greece 15.615.6 16.4 11.4 Canada 8.08.0 7.8 15.0
Iran 15.315.3 17.4 8.5 Belgium 7.87.8 5.3 8.1
Mexico 15.115.1 9.1 2.7 Germany 7.67.6 8.1 15.3
India 14.714.7 9.1 5.7 Japan 6.86.8 4.8 6.2
China 13.613.6 11.5 13.4 Brazil 6.56.5 7.7 3.7
China -Taiwan 13.613.6 15.4 10.3 Hungary 6.26.2 9.8 14.7
Great BritainGreat Britain 13.413.4 13.6 9.4 New Zealand 6.26.2 7.1 9.1
Venezuela 13.413.4 14.3 12.9 Portugal 5.85.8 5.1 9.7
South Korea 12.612.6 9.1 16.3 Israel 5.75.7 5.3 15.0
South Africa 11.911.9 18.0 10.8 Lithuania 4.94.9 2.3 4.9
China-Hong K 11.111.1 10.2 16.4 Malta 4.94.9 4.5 5.9
United StatesUnited States 10.510.5 10.9 10.8 Switzerland 4.74.7 8.2 7.4
Australia 9.49.4 11.9 6.0 Singapore 4.24.2 3.0 13.0
Romania 9.49.4 12.5 4.7 Netherlands 3.93.9 12.5 6.2
Guatemala 9.19.1 8.8 4.5 Sweden 2.72.7 3.1 17.0
ID92 10
Rates of severe severe assault also high
Approximately equal rates for men and women also applies to severe assaults
ID92 11
ASSAULTS ON MARITAL AND DATING PARTNERSDECREASES OVER THE LIFE COURSE
* For men and women* In economically developed and developing nations
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DECREASE IN SPOUSAL ASSAULT IN FIRST SEVEN YEARS OF MARRIAGE*
383 newlywed couples. At the time of marriage, and Yr 1, 2, 4, & 7
* Brian M. Quigley, Lorig Kachadourian, & Kenneth E. Leonard
H toW W to H Assault
K. Leonard et al
ID92 14
DOMESTIC ASSAULTS BY BOTH MEN AND WOMEN DECLINE WITH AGE British National Crime Survey, 1996
Mirrlees-Black, C. (1999). Domestic Violence: Findings from a new British Crime Survey self-completion questionnaire: A Research, development and statistics directorate report (Vol. Home Office Research Study 191). London: Home
Office.
ID92
16
WHEN THERE IS VIOLENCE MUTUAL VIOLENCE PREDOMINATES SIX OF THE 17 GENERAL POPULATION STUDIES SHOWING MUTUAL VIOLENCE PREDOMINATES, EXCEPT FOR KOREA
Among Violent Couples:
StudyBoth
ViolentMaleOnly
Female Only
1. National Family Violence Survey,1975 48% 25% 27%
2. National Co-morbidity Survey. 1990-02 54% 23% 24%
3. National Long. Study of Adolescent Health, 2001 50% 15% 35%
4. International Dating Violence Study, 2001-06 55% 16% 29%
5. International Parenting Study 2008 39% 11% 29%
6. Korean national survey - Any Violence Severe Violence
12%17%
49%70%
11%13%
1. Straus, M. A., Gelles, R. J., & Steinmetz, S. K. (1980 (2006)). Behind closed doors: Violence in the American family New York: Doubleday/Anchor Books (Re-issued Transaction Publications, 2006 with a new forward)
2..As reported by women. Kessler, R. C., Molnar, B. E., Feurer, I. D., & Appelbaum, M. (2001). Patterns and mental health predictors of domestic violence in the United States: Results from the National Comorbidity Survey. International Journal Of Law And Psychiatry, 24(4-5), 487-508.
3..Whitaker, D. J., Haileyesus, T., Swahn, M., & Saltzman, L. S. (2007). Differences in Frequency of Violence and Reported Injury Between Relationships With Reciprocal and Nonreciprocal Intimate Partner Violence American Journal of Public Health, 97(5), 941-947.
4. Straus, M. A. (2008). Dominance and symmetry in partner violence by male and female university students in 32 nations. Children and Youth Services Review, 30, 252-275.
5. Straus, M. A. (2009). Violence between parents reported by male and female university students: Prevalence, severity, chronicity, and mutuality. Journal of Aggression, Conflict and Peace Research, 1(1), 4-12..
6.. Kim, Jae-Yop and Emery, Clifton (2003) Marital Power, Conflict, Norm Consensus, and Marital Violence in a Nationally Representative Sample of Korean Couples. Journal of Interpersonal Violence 18:197-219.
ID92 17Straus, M. A. (2007). Dominance and symmetry in partner violence by male and female university students in 32 nations. Children and Youth Services Review, 30, 252-275.
Study of 14,252 students in a dating relationship. This chart is for the 4,239 who reported one or more incidents of violence.
MUTUALITY OF ASSAULT PERPETRATION IN DATING RELATIONSHIPS OF UNIVERSITY STUDENTS IN 32 NATIONS
ASSAULT ,TOTAL - % BOTH VIOLENT (AMONG VIOLENT RELATIONSHIPS)AS REPORTED BY MEN AND WOMEN (In rank order of national context (CUAT_3)
Median: Total = 68.7%, Males = 74.3%, Females = 67.3%
High Half Of Nations Low Half Of Nations
TotalTotal Male Feml TotalTotal Male Feml
Iran 92.692.6 100.0 89.8 Canada 68.668.6 73.6 67.2
Tanzania 90.590.5 89.7 91.2 Venezuela 68.468.4 56.7 76.1
South Africa 89.589.5 100.0 88.9 China-Taiwan 66.766.7 87.5 63.6
India 81.181.1 88.9 78.6 Guatemala 66.066.0 80.0 56.7
Japan 79.379.3 85.7 73.3 Portugal 65.265.2 87.5 58.0
Great BritainGreat Britain 77.777.7 80.0 77.4 New Zealand 63.863.8 40.0 70.3
Mexico 77.377.3 77.8 77.3 Australia 63.563.5 53.8 66.0
Lithuania 71.971.9 88.9 67.3 Germany 63.263.2 64.4 62.6
South Korea 71.471.4 70.0 72.1 China 61.961.9 71.3 58.4
Russia 71.271.2 75.5 69.0 Switzerland 61.761.7 63.6 61.0
Netherlands 71.171.1 100.0 67.3 Greece 59.859.8 70.8 55.6
Brazil 71.071.0 76.5 68.9 Israel 58.758.7 81.8 53.8
Hungary 69.869.8 75.0 66.7 Sweden 58.058.0 71.8 53.2
United StatesUnited States 69.569.5 72.7 68.2 Singapore 57.957.9 41.7 62.2
Romania 69.069.0 54.5 71.1 China-Hong K 54.354.3 59.2 52.9
Belgium 68.868.8 67.3 69.1 Malta 50.050.0 55.6 46.7
(Percentages are for the part of the sample in which at least one assault occurred in the previous 12 months
Can be a high percent of a small number of couples(as in Sweden)
MUTUAL VIOLENCEPREDOMINATES ACCORDING TO BOTH MEN AND WOMEN
18ID92
SEVERE ASSAULT - % BOTH VIOLENT (AMONG VIOLENT RELATIONSHIPS)AS REPORTED BY MEN AND WOMEN (in rank order of national context (CUAS_3J)
Median: Total = 57%, AS REPORTED BY: Males = 62, Females = 56%
High Half Of Nations Low Half Of Nations
TotalTotal Male Feml TotalTotal Male Feml
Japan 74.074.0 75.0 85.7 United StatesUnited States 57.057.0 60.4 55.7
Tanzania 73.073.0 73.3 72.7 Guatemala 55.655.6 44.4 66.7
Brazil 72.272.2 57.1 81.8 Germany 55.355.3 50.0 57.6
India 70.670.6 33.3 78.6 Russia 55.255.2 81.3 45.2
Portugal 69.669.6 100.0 58.8 Australia 53.653.6 80.0 47.8
South Korea 67.767.7 75.0 65.2 Lithuania 48.548.5 33.3 51.9
Iran 66.766.7 100.0 57.1 Belgium 48.348.3 46.2 48.6
Venezuela 64.364.3 64.7 64.0 Netherlands 47.847.8 66.7 41.2
Israel 64.064.0 75.0 61.9 China-Hong K 47.547.5 70.6 42.7
CanadaCanada 61.561.5 63.0 61.1 New Zealand 46.746.7 50.0 46.2
South Africa 61.161.1 100.0 56.3 Singapore 46.246.2 0.0 54.5
Mexico 60.560.5 50.0 61.8 Romania 44.144.1 66.7 41.9
Great Britain 59.759.7 33.3 63.5 Hungary 42.142.1 57.1 33.3
Greece 59.159.1 58.3 59.4 China 39.839.8 38.1 40.3
China -Taiwan 58.358.3 100.0 50.0 Sweden 25.025.0 40.0 21.1
Switzerland 57.157.1 83.3 46.7 Malta 24.024.0 0.0 14.3
According to both women & men: mutual violence is predominant for severe assaults as well as minor assaults
Percent mutual is close to results of other studies
19ID92
ID92 20
IN ALL 32 NATIONS IN THE INTERNATIONAL DATING VIOLENCE STUDY, AND IN OVER 200 OTHER STUDIES THAT
HAVE DATA FOR BOTH MEN AND WOMEN(Most studies obtain data only on female victims/male perpetrators)
About the same percent of women as men physically assault a partnerWhen there is violence, the most prevalent pattern is mutual violenceAbout the same percent of women as men are the first to hitSelf –defense is rarely the instigating cause of assaults by women or men
(Slides available on my) websiteThe main instigating cause is anger over a behavior of the partner such as
o Failure to do household choreso Infidelityo Moneyo Child care and management etc
ID92 21
IS MUTUALITY A RESULT OF SELF-DEFENSE BY WOMEN?
World Health Organization report on violence (Krug, 2002)“Where violence by women occurs it is more likely to be in the form of
self-defense (32, 37, 38)” What do references 32, 37, and 38 really show?All three asserted that women's violence was primarily in self-defense, but:
#32 Saunders reports that 70% of the minor violence and 60% of the severe violence was NOT in self-defense
#37 DeKesseredy et al. 37% of the minor violence and 43% of the severe violence was initiated by women.
#38 Johnson & Ferraro (Michael P. Johnson & Ferraro, 2000) cites references 32 and 37 but presents no new data
Six other studies report data on self-defense* Five of the six found only a small percentage of female violence was
in self-defense * One found high rates of self-defense, but percent in self-defense was
slightly greater for men (56%) than for women (42%) (Harned, 2001)
ID92 22
OTHER DATA THAT CONTRADICTS THE SELF-DEFENSE EXPLANATION
About the same percent of women as men are the first to hit (Straus, 2005)About a quarter of partner-violence is female only (see previous table) Most usual proximate motivations for violence by women, like motivations of
men, are:o Angero Coercion to do or stop doing somethingo Punishing partner’s misbehavior (Cascardi & Vivian, 1995; Fiebert &
Gonzalez, 1997; Pearson, 1997)Example:
Pearson (1997): 90% of women studied assaulted their partner because they were furious or jealous, or frustrated, not to defend themselves.
MUTUAL VIOLENCE IS EXTREMELY IMPORTANT BECAUSE
Associated with 2 to 5 times higher rate of injury
When violence is mutual there is little difference in injury rates for men and women
This applies to injury sustained and injury inflicted by women and by men, and as reported by women as well as by men
An additional reason why prevention and treatment must address `women as well as men
Essential to recognize for effective treatment
ID92 23
ID92 24
WOMEN SUFFER MORE INJURY THE HIGHER THE ASSAULT RATE BY STUDENTS IN EACH NATION,
THE HIGHER THE SEVERE INJURY RATE,
r = 57 r = .18
Iran Omitted. 31 Nations
ID92 25
ID92 26
16 Scales For Individual CharacteristicsASP Antisocial Personality SymptomsBOR Borderline Personality SymptomsCH Criminal HistoryDEP Depressive SymptomsGHM Gender Hostility To MenGHW Gender Hostility to WomenLD Limited Disclosure POS Positive ParentingPTS Post-Traumatic Stress SymptomsSUB2 Alcohol AbuseSUB 3 Drug AbuseSC Self-ControlSI Social IntegrationSTR Stressful ConditionsSAH Sexual Abuse HistoryVA Violence ApprovalVS Violent Socialization
THE PERSONAL AND RELATIONSHIPS PROFILE (PRP)Measures 25 Risk Factors For Partner Violence
8 Scales For Couple Relationships
(Behavior towards or beliefs about the partner)
AM Poor Anger ManagementCP Communication ProblemsCON ConflictDOM DominanceJEL JealousyNA Negative AttributionRC Relationship CommitmentRD Relationship DistressThis test is available
on my website
Assault Scale
Anti-Social Personality F=33.5, p<.001
(Anti-Social Personality Quintiles)
ANTISOCIAL PERSONALITY ANTISOCIAL PERSONALITY IS ASSOCIATED WITH AN 89% INCREASE IN ASSAULT (COMPARING LOWEST AND HIGHEST SCORING FIFTH)
27ID92
Antisocial Personality F=33.5, p<.001Gender F=160.4, p<.001Gender*Anti-Social F=5.9, p<.001
Female
Male
Assault Scale
Anti-Social Personality (Quintiles)
THE LINK BETWEEN ANTISOCIAL PERSONALITY ANTISOCIAL PERSONALITY & ASSAULT APPLIES TO BOTH MEN AND WOMEN
28ID92
Assault Scale
Anti-Social Personality F=33.5, p<.001GDP F=29.3, p<.001Anti-Social*GDP F=2.0, p=.024
Low GDPHigh GDP
Anti-Social Personality (Quintiles)
LINK BETWEEN ANTISOCIAL PERSONALITY ANTISOCIAL PERSONALITY & ASSAULT APPLIES TO BOTH ECONOMICALLY DEVELOPING & DEVELOPED NATIONS
29ID92
r=.55
Assault
Antisocial Personality Symptoms
30
THE HIGHER THE AVERAGE ANTISOCIAL PERSONALITYANTISOCIAL PERSONALITY SCORE OF STUDENTS IN A NATION, THE HIGHER THE AVERAGE ASSAULT
SCORE FOR THAT NATIONHigh AntisocialAnd high assault
nations
ID92
r=.68r=.28
Ass
ault
31
THE LINK BETWEEN ANTISOCIAL PERSONALITY ANTISOCIAL PERSONALITY & ASSAULT IS STRONGER FOR ASSAULTS BY WOMEN THAN BY MEN, EVEN
THOUGH WOMEN HAVE LOWER ASP
Antisocial Personality Symptoms (Mean for students in each nation)
Men Women
ID92
Assault Scale
Criminal History F=28.7, p<.001
PRIOR CRIME PRIOR CRIME IS ASSOCIATED WITH A 77% INCREASE IN ASSAULT
Criminal History (Quintiles)32ID92
Assault Scale
Criminal History F=28.7, p<.001Gender F=160.5, p<.001Crim History*Gender F=4.8, p=.001
Female
Male
Criminal History (Quintiles)
PRIOR CRIME PRIOR CRIME IS ASSOCIATED WITH ASSAULT BY BOTH MEN & WOMEN
EVEN THOUGH WOMEN COMMIT FAR FEWER CRIMES
33ID92
Assault Scale
Criminal History F=28.7, p<.001GDP F=27.9, p<.001Crim History*GDP F=1.9, p=.031
Low GDP
High GDP
Criminal History (Quintiles)
PRIOR CRIME PRIOR CRIME IS STRONGLY RELATED TO ASSAULTING A DATING PARTNER AT ALL LEVELS OF ECONOMIC DEVELOPMENT
34ID92
Assault
r=.39
35
THE HIGHER THE PRIOR CRIME PRIOR CRIME SCORE OF STUDENTS IN A NATION, THE HIGHER THE AVERAGE ASSAULT SCORE FOR THAT NATION
Criminal History(Mean for students in each nation)
ID92
Assault
r=.13 r=.50
36
THE LINK BETWEEN PRIOR CRIME PRIOR CRIME & ASSAULT IS STRONGER FOR ASSAULTS BY WOMEN THAN BY MEN EVEN THOUGH WOMEN
COMMIT FEWER CRIMES
Criminal History (Mean for students in each nation)
Men Women
ID92
ID92 37
FOR THE OTHER FIVE MENTAL HEALTH PROBLEMS
Only discuss the “main effect” slide (just flash by the others)
All follow the same patternThe higher the mental health problem score, the more assaultSame relationship for men and women, and for low and high
economic development natipns
But all available on my website (Google my name)
Assault Scale
PTS F=24.8, p<.001
Post Traumatic Stress (Quintiles)
POST TRAUMATIC STRESS POST TRAUMATIC STRESS SYMPTOMS ARE RELATED TO A 77% INCREASE IN PARTNER ASSAULTS
38ID92
Assault Scale
PTS F=24.8, p<.001Gender F=86.6, p<.001PTSD*Gender F=1.9, p=.114
Female
Male
Post Traumatic Stress (Quintiles)
POST TRAUMATIC STRESS POST TRAUMATIC STRESS SYMPTOMS ARE STRONGLY RELATED TO ASSAULT BY WOMEN AS WELL AS MEN
39ID92
Assault Scale
PTS F=24.8, p<.001GDP F=27.5, p<.001PTSD*GDP F=1.5, p=.114
Low GDP
High GDP
Post Traumatic Stress (Quintiles)
POST TRAUMATIC STRESS POST TRAUMATIC STRESS SYMPTOMS IS RELATED TO ASSAULTING AT ALL LEVELS OF NATIONAL ECONOMIC DEVELOPMENT
40ID92
Assault
r=.53
41
THE HIGHER THE POST TRAUMATIC STRESS SYMPTOMS POST TRAUMATIC STRESS SYMPTOMS OF STUDENTS IN A NATION, THE HIGHER THE ASSAULT RATE FOR THAT NATION
Post Traumatic Stress Symptoms(Mean for students in each nation)
ID92
Assault Scale
Borderline F=53.4, p<.001
Borderline (Quintiles)
BORDERLINEBORDERLINE PERSONALITY SYMPTOMS ARE ASSOCIATED WITH A 66% INCREASE IN ASSAULTING A DATING PARTNER
42ID92
Assault Scale
Borderline F=53.4, p<.001Gender F=103.0, p<.001Borderline*Gender F=3.8, p=.004
Female
Male
Borderline (Quintiles)
THE LINK BETWEEN BORDERLINEBORDERLINE PERSONALITY SYMPTOMS AND ASSAULTING A PARTNER APPLIES TO BOTH MEN A ND WOMEN
43ID92
Assault Scale
Borderline F=53.4, p<.001GDP F=25.0, p<.001Borderline*GDP F=.71, p=.74
Low GDP
High GDP
Borderline (Quintiles)
BORDERLINEBORDERLINE PERSONALITY IS A RISK FACTOR FOR PARTNER VIOLENCE
AT ALL FOUR LEVELS OF NATIONAL ECONOMIC DEVELOPMENT
44ID92
Assault
r=.60
45
THE HIGHER THE AVERAGE BORDERLINE PERSONALITY BORDERLINE PERSONALITY SCORE OF STUDENTS IN A NATION, THE HIGHER THE RATE OF ASSAULT
Borderline Personality Symptoms (Quintiles)ID92
46
Depressive Symptoms (Quintiles)
STUDENTS IN THE TOP FIFTH OF DEPRESSIVE SYMPTOMSDEPRESSIVE SYMPTOMS ARE 39% MORE LIKELY TO ASSAULT A DATING PARTNER
Assault Scale
Depression F=9.9, p<.001
ID92
Assault Scale
Male
Female
Depression F=9.9, p<.001Gender F=100.2, p<.001Depression*Gender F=4.7, p=.001
Depressive Symptoms (Quintiles)
DEPRESSIVE SYMPTOMS DEPRESSIVE SYMPTOMS ARE MORE CLOSELY RELATED TO ASSAULTS BY WOMEN
47ID92
Assault
48
Depressive Symptoms(Mean for students in each nation)
THE HIGHER THE DEPRESSIVE SYMPTOMS DEPRESSIVE SYMPTOMS SCORE OF STUDENTS IN A NATION, THE HIGHER THE AVERAGE ASSAULT SCORE FOR
THAT NATION
ID92
Assault
r=.43r=.00
49
Men Women
LINK BETWEEN DEPRESSIVE SYMPTOMS DEPRESSIVE SYMPTOMS & ASSAULT IS STRONGER FOR ASSAULTS BY WOMEN THAN BY MEN
Depressive Symptoms(Mean for students in each nation)ID92
Assault Scale
Alcohol Abuse F=6.1, p<.001
Alcohol Abuse (Quintiles)
ALCOHOL ABUSE ALCOHOL ABUSE IS ASSOCIATED WITH A 29% INCREASE IN ASSAULT
50ID92
Assault Scale
Female
Male
Alcohol Abuse F=6.1, p<.001Gender F=114.8, p<.001Alcohol*Gender F=.50, p=.737
Alcohol Abuse (Quintiles)
LINK BETWEEN ALCOHOL ABUSE ALCOHOL ABUSE & ASSAULT APPLIES TO BOTH MEN AND WOMEN
51ID92
Assault Scale
Drug Abuse F=16.6, p<.001
Drug Abuse (Terciles)
DRUG ABUSE DRUG ABUSE IS ASSOCIATED WITH A 29% INCREASE IN THE ASSAULT SCALE SCORE
52ID92
Assault Scale
Female
Male
Drug Abuse F=16.6, p<.001Gender F=84.3, p<.001Drug Abuse*Gender F=.05, p=.95
Drug Abuse(Terciles)
THE LINK BETWEEN DRUG ABUSE DRUG ABUSE & ASSAULT APPLIES TO BOTH MEN AND WOMEN
53ID92
ID92 54
SUMMARY AND CONCLUSIONS1.Partner violence may the most frequent type of assault
2.Like other acts of violence and other crime, it declines rapidly with age
3.Most partner violence is mutual
4.Retaliation is common, self-defense is a low percent of partner violence
5.At least 7 types of Mental health problems are risk factors for partner violence
6.All five of the above apply to:* Women as well as men* In developing as well as economically developed
nations
ALL OF THE RELATIONSHIPS SHOWNARE “RISK FACTORS” NOT A ONE-TO-ONE CAUSE
A Condition Which Increases The Probability Of A Disease Or Problem
EXAMPLES:–Smoking And Death From Smoking Related Disease
1/3 will die by age 65 a from smoking related disease – which means that 2/3 will not--Pregnancy With HIV And Child Born With HIV
“Only” 20% are born with HIV, i.e. 80% are not--Corporal Punishment As A Child And Assaulting A Partner
Percent assaulting increased form 8 to 24% -- 3 times morewhich means that 76% of those spanked the most do
not assault
Almost all social science and most medical research results are like this. Risk factors not one-to-one relationships
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QUESTION 4 What are the implications?
A. THEORETICAL IMPLICATIONS Change conceptualization of partner violence
From: A manifestation of “patriarchy” as THE causeTO: Family system conceptualization which recognizes that:
• Most partner violence is mutual• Patriarchal dominance is just one of many causes• Mental health and social skill problems are often a cause
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SOME REFERENCES ON THE INTERNATIONAL DATING VIOLENCE STUDYDouglas, E. M., & Straus, M. A. (2006). Assault and injury of dating partners by university students In 19 countries and its relation to corporal punishment experienced as a child. European journal of criminology, 3(3), 293-318.Feld, S. L., & Straus, M. A. (1989). Escalation and desistance of wife assault in marriage. Criminology, 27(1), 141-161.Hines, Denise A. and Murray A. Straus. 2007. "Binge Drinking and Violence Against Dating Partners: The Mediating Effect of Antisocial Traits and Behaviors in a Multi-National Perspective." Aggressive Behavior 33:441-457.Medeiros, Rose A. and Murray A. Straus. 2006. "Risk factors for physical violence between dating partners: Implications for gender-inclusive prevention and treatment of family violence. ." Pp. 59-87 in Family approaches to domestic violence: a practioners guide to gender-inclusive research and treatment, edited by J. C. Hamel and T. Nicholls: Springer (http://pubpages.unh.edu/~mas2)Rebellon, Cesar J., Murray A. Straus, and Rose Anne Medeiros. 2008. "Self-control in global perspective: An Empirical assessment of Gottfredson and Hirschi’s general theory within and across 32 national settings." European journal of criminology 5:331-362.Straus, M. A. & International Dating Violence Research Consortium. (2004). Prevalence of violence against dating partners by male and female university students worldwide. Violence Against Women, 10(7), 790-811.Straus, M. A. (1999). The controversy over domestic violence by women: A methodological, theoretical, and sociology of science analysis. In X. Ariaga & S. Oskamp (Eds.), Violence in intimate relationships (pp. 17-44). Thousand Oaks, CA: Sage.Straus, M. A. (2001). Beating the devil out of them: Corporal punishment in American families and its effects on children, 2nd edition (2nd ed.). New Brunswick, NJ: Transaction Publishers.
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Straus, M. A. (2004). Cross-cultural reliability and validity of the revised conflict tactics scales: A study of university student dating couples in 17 nations. Cross-Cultural Research, 38(4), 407-432.Straus, M. A. (2009). Gender symmetry in partner violence: Evidence and implications for prevention and treatment. In D. J. Whitaker & J. R. Lutzker (Eds.), Preventing partner violence: Research and evidence-based intervention strategies (pp. 245-271). Washington D.C. : American Psychological Association.Straus, M. A. (2009). Why the overwhelming evidence on partner physical violence by women has not been perceived and is often denied. Journal of Aggression, Maltreatment & Trauma, 18(6), 552-571.Straus, M. A. (2009). The National context effect: An Empirical test of the validity of Cross-National research using unrepresentative samples. Cross-Cultural Research, 43(3), 183-205.Straus, M. A., & Gelles, R. J. (1990). Physical violence in American families: Risk factors and adaptations to violence in 8,145 families. New Brunswick, NJ: Transaction Press.Straus, M. A., & Ramirez, I. L. (2004). Criminal history and assaults of dating partners: The role of type of prior crime, age of onset, and gender. Violence & Victims, 19(4), 413-434.Straus, M. A., & Ramirez, I. L. (2007). Gender symmetry in prevalence, severity, and chronicity of physical aggression against dating partners by University students in Mexico and USA. Aggressive Behavior, 33, 1-10. Straus, M. A., & Savage, S. A. (2005). Neglectful behavior by parents in the life history of university students in 17 countries and its relation to violence against dating partners. Child Maltreatment, 10(2), 124-135Straus, M. A., Douglas, E. M., & Medeiros, R. A. (in preparation. The primordial violence: Corporal punishment by parents, cognitive development, and crime. .
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SELF-DEFENSE REFERENCESCarrado, M., George, M. J., Loxam, E., Jones, L., & Templar, D. (1996). Aggression in british heterosexual relationships: A
descriptive analysis. Aggressive Behavior, 22, 401-415.Cascardi, M., & Vivian, D. (1995). Context for specific episodes of marital violence: Gender and severity of violence
differences. Journal of Family Violence, 10, 265-293.Cascardi, M., & Vivian, D. (1995). Context for specific episodes of marital violence: Gender and severity of violence
differences. Journal of Family Violence, 10, 265-293.Dekeseredy, W. S., Saunders, D. G., Schwartz, M. D., & Shahid, A. (1997). The meanings and motives for women's use of
violence in Canadian college dating relationships: Results from a national survey. Sociological Spectrum, 17, 199-222.Felson, R. B., & Messner, S. F. (1998). Disentangling the effects of gender and intimacy on victem precipitation in homicide.
Criminology, 36, 405-423.Follingstad, D. R., Wright, S., Lloyd, S., & Sebastian, J. A. (1991). Sex differences in motivations and effects in dating
violence. Family Relations, 40, 51-57.Harned, M. S. (2001). Abused women or abused men? An examination of the context and outcomes of dating violence.
Violence and Victims, 16, 269-285.Johnson, M. P., & Ferraro, K. J. (2000). Research on domestic violence in the 1990's: Making distinctions. Journal of
Marriage and the Family, 62, 948-963.Jurik, N. C., & Gregware, P. (1989). A method for murder: An interactinist analysis of homicides by women. School of Justice
Studies, Arizona State University, Tempe, AZ.Krug, E. G., Dahlberg, L. L., Mercy, J. A., Zwi, A. B., Lozano, R., & World Health Organization. (2002). World report on
violence and health. Geneva: World Health Organization.Pearson, P. (1997). When she was bad: Women and the myth of innocence. Toronto: Random House.Pearson, P. (1997). When she was bad: Women and the myth of innocence. Toronto: Random House.Sarantakos, S. (1998). Husband abuse as self-defence, International Congress of Sociology. Montreal, Canada.Saunders, D. G. (1986). When battered women use violence: Husband-abuse or self-defense? Violence and Victims, 1, 47-
60.Sommer, R. (1996). Male and female perpetrated partner abuse: Testing a diathesis-stress model. Winnepeg, Manitoba:
University of Manitoba, PhD Dissertation. Straus, M. A. (2005). Women's violence toward men is a serious social problem. In D. R. Loseke, R. J. Gelles & M. M.
Cavanaugh (Eds.), Current controversies on family violence (2nd ed., pp. 55-77). Newbury Park: Sage Publications.
NATION ABBREVIATIONS(for those who download the slides)
AUS Australia; BEL Belgium; BRA Brazil; CAN Canada; CHE Switzerland; CHN China; DEU Germany; GBR Great Britain; GRC Greece; GTM Guatemala; HKG ong Kong; HUN Hungary; IND India; IRN Iran; ISR Israel; JPN Japan; KOR South Korea; LTU Lithuania; MEX Mexico; MLT Malta; NLD Netherlands; NZL New Zealand; PRT Portugal; ROU Romania; RUS Russia; SGP Singapore; SWE Sweden; TWN Taiwan; TZA Tanzania; USA United States; VEN Venezuela; ZAF S Africa
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Medeiros, R. A., & Straus, M. A. (2006). Risk factors for physical violence between dating partners: Implications for gender-inclusive prevention and treatment of family violence. . In J. C. Hamel & T. Nicholls (Eds.), Family approaches to domestic violence: a practioners guide to gender-inclusive research and treatment (pp. 59-87): Springer (also available at http://pubpages.unh.edu/~mas2)
Example of cause that is not a mental
health problem
THE MORE DOMINANCE BY ONE PARTNER, THE HIGHER THE PROBABILITY OF AN ASSAULT, REGARDLESS OF WHETHER
THE DOMINANT PARTNER IS MALE OR FEMALE
Low GDP
High GDP
Assault Scale
Depression F=9.9, p<.001GDP F=31.2, p<.001Depression*GDP F=1.3, p=.22
IN THREE OF THE FOUR LEVELS OF NATIONAL ECONOMIC DEVELOPMENT, THE HIGHER THE DEPRESSIVE SYMPTOMS DEPRESSIVE SYMPTOMS SCORE, THE
HIGHER THE RATE OF ASSAULT
Depressive Symptoms (Quintiles)63ID92
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Partial r = .-.69
THE HIGHER THE EMPOWERMENT OF WOMEN IN A NATION, THE LOWER THE DOMINANCE OF MEN IN DATING RELATIONSHIPS (29 Nations
Assault
r=.53
65
THE HIGHER THE DRUG ABUSE DRUG ABUSE SCORE OF STUDENTS IN A NATION, THE HIGHER THE AVERAGE ASSAULT SCORE FOR
THAT NATION
Drug Abuse(Mean for students in each nation)ID92
Assault
r=.38 r=.52
66
Men Women
THE DRUG ABUSE DRUG ABUSE & ASSAULT LINK IS STRONGER FOR ASSAULTS BY WOMEN THAN BY MEN, EVEN FEWER WOMEN ABUSE DRUGS
Drug Abuse(Mean for students in each nation)ID92
Assault
r=.27 r=.13
67
Men Women
THE LINK BETWEEN ALCOHOL ABUSE ALCOHOL ABUSE & ASSAULT IS STRONGER FOR ASSAULTS
BY WOMEN THAN BY MEN, EVEN THOUGH WOMEN HAVE LOWER ALCOHOL ABUSE
Alcohol Abuse(Mean for students in each nation)
Alcohol Abuse(Mean for students in each nation)ID92
Assault
r=.23
68
THE HIGHER THE ALCOHOL ABUSE ALCOHOL ABUSE SCORE OF STUDENTS IN A NATION, THE LOWER THE AVERAGE ASSAULT SCORE FOR THAT
NATION
Alcohol Abuse(Mean for students in each nation)
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r=.34 r=.66
Assault
69
THE LINK BETWEEN BORDERLINE PERSONALITY BORDERLINE PERSONALITY & ASSAULT IS STRONGER FOR ASSAULT BY WOMEN THAN BY MEN
Borderline Personality Symptoms(Mean for students in each nation)
Men Women
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Assault
r=.22 r=.59
70
Men Women
THE LINK BETWEEN POST TRAUMATIC STRESS POST TRAUMATIC STRESS & ASSAULT IS STRONGER FOR ASSAULTS BY WOMEN THAN BY MEN
Post Traumatic Stress Symptoms(Mean for students in each nation)ID92
Assault Scale
Risk Factor Index F=38.1, p<.001
Mental Health Risk Factor Index (Quintiles)
THE COMBINATION OF ALL SEVEN MENTAL HEALTH PROBLEMS COMBINATION OF ALL SEVEN MENTAL HEALTH PROBLEMS HAS THE STRONGEST RELATION TO ASSAULTING A DATING PARTNER
161% increase
71
Assault Scale
Risk Factor Index F=38.1, p<.001Gender F=137.9, p<.001Risk Factor Index*Gender F=2.9, p=.008
Female
Male
Mental Health Risk Factor Index (Quintiles)
THE COMBINATION OF ALL SEVEN MENTAL HEALTH PROBLEMS COMBINATION OF ALL SEVEN MENTAL HEALTH PROBLEMS IS STRONGLY RELATED TO ASSAULTING A DATING PARTNER BY BOTH
MEN & WOMEN
72
Assault Scale
Risk Factor Index F=38.1, p<.001GDP F=10.2, p<.001Risk Factor Index*GDP F=2.5, p<.001
Low GDP
High GDP
Mental Health Risk Factor Index (Quintiles)
COMBINATION OF ALL SEVEN MENTAL HEALTH PROBLEMS COMBINATION OF ALL SEVEN MENTAL HEALTH PROBLEMS IS STRONGLY RELATED TO ASSAULTING A PARTNER AT ALL FOUR LEVELS
OF ECONOMIC DEVELOPMENT
73
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The Average Score For Male Students Is Higher Than The Score Of Female StudentsFor All Mental Health Problems Except PTS Symptoms (all differences significant)
Antisocial Personality
Borderline Personality
Depress-ive
Symp-toms
PTS Symp-toms
Criminal History
Alcohol Abuse
Drug Abuse
Male 30.5 34.1 30.3 39.9 22.6 36.5 10.7Femal 23.1 32.9 29.7 41.6 12.2 27.4 6.2
A. High level of conflict in familiesB. Dominance of one partner,
Especially male dominanceC. Cultural norms tolerating partner
ViolenceD. Parental training in violenceE. Violence in the society
D. Mental health problems
E. Multiple causes, all interwoven
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Social causesmost prevalent
CAUSES PARTNER VIOLENCEMental health problems extremely importantBut not the most prevalent cause
The focus today-