Soc 695 Family Violence Research In World Perspective Murray A. Straus THE INTERNATIONAL DATING VIOLENCE STUDY (IDVS)* A STUDY OF UNIVERSITY STUDENTS IN 32 COUNTRIES •The work was supported by National Institute of Mental Health grant T32MH15161 and the University of New Hampshire. • IDV study 1 OBJECTIVES TODAY AN OVERVIEW OF THE INTERNATIONAL DATING VIOLENCE STUDY You will be using this data for lab projects all semester UNDERSTAND THE IDEA OF THEORY AND HOW IT APPLIES TO THE STUDY OF FAMILY VIOLENCE UNDERSTAND HOW THE CONFLICT TACTICS SCALES MEASURES FAMILY VIOLENCE * Shows the importance of measurement in science * Illustrates some aspects of the sociology of science IDV study 2 IDV study 3 MAIN PURPOSES OF THE IDVS PURPOSE 1: ESTIMATE THE PREVALENCE OF KINDS OF PARTNER “VIOLENCE” * PHYSICAL ASSAULT * INJURY FROM ASSAULT * SEXUAL COERCION * PSYCHOLGICAL AGGRESSION FOR EACH TYPE PREVALENCE (%) SEVERITY CHRONICITY (How often) IDV study 4 PURPOSE 2: TEST THEORIES ABOUT THE CAUSES OF VIOLENCE AGAINST PARTNERS WHAT IS A THEORY? For purposes of this course: * An explanation of why something is the way it is. * Can be: 1. As yet untested – a set of ideas 2. Tested but not yet widely accepted 3. Conclusive in the sense of the evidence is accepted by almost all scientists in that filed But even category 3 is always open to question Example of theory to be tested in the next two labs: * Spanking is part of the explanation of violence * Falls in category 2 IDV study 5 SOCIAL INTEGRATION OF MEXICAN AMERICAN AND NON-MEXICAN WHITE STUDENTS AND ASSAULTS ON DATING PARTNERS ANOTHER EXAMPLE Ignacio Luis Ramirez Texas Technological University 0.35 * WHAT ARE TWO THEORIES OF DATING VIOLENCE THAT YOU WOULD LIKE TO SEE TESTED? IDV study Non-Mexican Mexican American 0.3 Probability of Assault * WHAT IS THE THEORY TESTED FOR THIS GRAPH? 0.25 0.2 0.15 0.1 0.05 0 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Social Integration Score 6 OTHER EXAMPLES OF THEORIES THAT CAN BE TESTED WITH INTERNATIOAL DATING VIOLENCE STUDY DATA ANTI-SOCIAL PERSONALITY ALCOHOL ABUSE ANGER MANAGEMENT SKILL DOMINANCE OF ONE PARTNER COMMUNICATION PROBLEMS CRIMINALITY GENDER HOSTILITY GENDER INEQUALITY SELF-CONTROL SOCIAL INTEGRATION SOCIAL STRESS VIOLENT CHILD REARING VIOLENT CULTURAL NORMS IDV study 7 IDV study 8 THE CONCEPT OF A “RISK FACTOR” “RISK FACTOR” IS A SYNONYM FOR THE INDEPENDENT VARIABLE WHEN IT REFERS TO •A CONDITION WHICH IS ASSOCIATED WITH AND INCREASED PROBABILITY OF A DISEASE OR PROBLEM • EXAMPLES: –SMOKING AND DEATH FROM SMOKING RELATED DISEASE (33% chance) –MALE DOMINANCE AND WIFE BEATING (20% chance - 7 fold increase) –SPANKING AND DELINQUENCY (24% chance - 5 fold increase) –BINGE DRINKING AND WIFE BEATING (19% chance - 3 fold increase) IDV study 9 SOME ILLUSTRATIVE FINDINGS * RATES OF ASSAULT AND INJURY * TESTS OF THEORIES ABOUT THE CAUSES IDV study 10 PHYSICAL ASSAULT SCALE OF THE CTS2 MINOR PHYSICAL ASSAULT • • • • • Slapped my partner Grabbed my partner Threw something at my partner that could hurt Twisted my partner’s arm or hair Pushed or shoved my partner SEVERE PHYSICAL ASSAULT • • • • • • • Punched or hit my partner with something that could hurt Kicked my partner Slammed my partner against a wall Choked my partner Beat up my partner Burned or scalded my partner Used knife or gun on my partner IDV study 11 PHYSICAL ASSAULT RATES Table 4A. Overall Assault Perpetration (%) Table 4B. Severe Assault Perpetration (%) SITE TOTAL (MALE FEMALE) FEM/MALE% USA-LOUISIAN 44.7 (38.1 48.2) 126.5% MEX-JUAREZ 42.0 (30.8 44.3) 143.8% IND-PUNE 39.0 (33.3 41.2) 123.7% CAN-LONDON 36.3 (25.9 44.2) 170.7% USA-MISSISSP 34.5 (24.0 35.7) 148.8% KOR-PUSAN 33.7 (24.7 39.4) 159.5% USA-INDIANA 33.5 (39.0 31.5) 80.8% USA-TX-MEX 33.1 (34.0 32.4) 95.3% USA-TX NCDCHS 31.3 (42.4 26.8) 63.2% BEL-FLEMISH 31.0 (26.0 32.5) 125.0% CAN-TORONTO 30.6 (23.8 34.2) 143.7% USA-TX-N MEX 30.6 (31.1 30.2) 97.1% NDL-AMSTRDAM 30.2 (31.4 29.7) 94.6% DEU-FREIBURG 29.5 (37.1 24.0) 64.7% CAN-WINNIPEG 29.0 (38.5 27.7) 71.9% HKG-HONGKONG 28.6 (19.5 34.6) 177.4% USA-NH 1 28.5 (24.7 30.2) 122.3% NZL-CHRISTCH 26.6 (16.7 29.2) 174.9% USA-NH 2 26.5 (26.1 26.6) 101.9% CHE-FRENCH 24.5 (30.2 22.5) 74.5% USA-CINCINN 24.5 (22.8 26.1) 114.5% CHE-GERMAN 23.9 (18.5 25.2) 136.2% BRA-SAOPAULO 23.3 (22.4 23.8) 106.3% CAN-HAMILTON 23.0 (13.5 24.5) 181.5% CAN-MONTREAL 22.8 (20.6 23.4) 113.6% SGP-SINGAPORE 22.7 (11.6 27.8) 239.7% USA-PENNSLVNA 21.9 (14.0 24.3) 173.6% AUS-ADELAIDE 21.3 (19.1 21.8) 114.1% ISR-EMEKZYRL 20.8 (22.6 20.4) 90.3% USA-UTAH 17.7 (16.4 18.4) 112.2% PRT-BRAGA 17.1 (17.4 16.7) 96.0% IDV study R: Tot-Male = 0.67, Tot-Female = 0.93, Male-Fem = 0.39 SITE TOTAL (MALE FEMALE) FEM/MALE% IND-PUNE 22.2 (12.5 25.8) 206.4% USA-LOUISIAN 21.0 (18.0 22.5) 125.0% USA-MISSISSP 20.5 (20.0 20.6) 103.0% KOR-PUSAN 17.4 (9.9 22.2) 224.2% CAN-LONDON 15.6 (13.8 16.9) 122.5% MEX-JUAREZ 15.4 (12.8 15.9) 124.2% USA-INDIANA 13.4 (18.6 11.5) 61.8% CAN-TORONTO 12.4 (8.5 14.4) 169.4% USA-TX-N MEX 12.3 (11.8 12.8) 108.5% HKG-HONGKONG 11.4 (5.8 15.0) 258.6% USA-CINCINN 11.3 (12.1 10.5) 86.8% NZL-CHRISTCH 10.6 (4.2 12.4) 295.2% USA-TX NCDCHS 10.4 (21.2 6.1) 28.8% CAN-HAMILTON 9.6 (5.4 10.3) 190.7% USA-TX-MEX 9.6 (10.8 8.9) 82.4% ISR-EMEKZYRL 9.4 (9.7 9.4) 96.9% AUS-ADELAIDE 9.2 (9.5 9.1) 95.8% USA-NH 2 9.0 (9.0 9.1) 101.1% CAN-WINNIPEG 8.9 (16.7 8.0) 47.9% CAN-MONTREAL 8.8 (7.9 9.1) 115.2% CHE-GERMAN 8.7 (7.4 9.0) 121.6% USA-NH 1 8.2 (4.3 10.0) 232.6% BEL-FLEMISH 8.1 (6.0 8.7) 145.0% PRT-BRAGA 7.6 (9.4 5.0) 53.2% DEU-FREIBURG 7.3 (10.3 5.2) 50.5% BRA-SAOPAULO 6.8 (8.4 6.1) 72.6% USA-UTAH 6.1 (4.5 7.0) 155.6% SGP-SINGAPORE 5.0 (1.5 6.6) 440.0% USA-PENNSLVNA 4.9 (4.7 5.0) 106.4% CHE-FRENCH 4.5 (8.0 3.3) 41.3% NDL-AMSTRDAM 4.4 (8.6 3.0) 34.9% 12 = 0.37 R: Tot-Male = 0.61, Tot-Female = 0.96, Male-Fem CTS2 IDV study 13 TOTAL INJURY SITE TOTAL (MALE,FEMALE) IND-PUNE 20.0 (13.0 CAN-LONDON 19.3 (13.8 USA-LOUISIAN 18.0 (17.1 USA-INDIANA 14.8 (25.4 USA-WASH DC 12.1 (15.4 USA-TX-N MEX 11.5 (9.9 MEX-NORTHERN 10.4 (7.9 KOR-PUSAN 10.1 (8.9 USA-TX NCDCHS 9.7 (19.4 CAN-TORONTO 9.5 (8.6 USA-CINCINN 9.3 (12.7 USA-MISSISSP 9.3 (16.0 GBR-SCOTLAND 8.0 (5.9 CAN-HAMILTON 7.8 (5.4 USA-TX-MEX 7.6 (8.8 NZL-CHRISTCH 7.1 (8.3 BEL-FLEMISH 6.7 (5.0 CAN-MANITOBA 6.5 (6.3 USA-NH 2 6.3 (7.5 ISR-EMEKZYRL 5.9 (8.1 HKG-HONGKONG 5.5 (5.8 DEU-FREIBURG 5.4 (8.6 USA-NH 1 5.0 (3.9 CAN-MONTREAL 4.8 (9.5 BRA-SAOPAULO 4.2 (3.6 SGP-SINGAPORE 3.6 (4.4 PRT-BRAGA 3.5 (5.9 USA-PENNSLVNA 3.2 (7.6 CHE-GERMAN 3.1 (0.0 AUS-ADELAIDE 2.9 (0.0 NDL-AMSTRDAM 2.2 (8.6 USA-UTAH 2.2 (3.0 IDV study CHE-FRENCH 1.5 (2.0 R: Tot-Male= .73, Tot-Female=.96, FEM/MALE% 22.4) 171.7% 23.4) 169.5% 18.5) 108.5% 10.8) 42.3% 11.4) 74.3% 12.8) 129.3% 10.9) 138.7% 10.9) 123.5% 6.1) 31.5% 10.0) 115.7% 6.1) 48.2% 8.5) 53.1% 8.4) 142.5% 8.2) 150.6% 6.9) 77.9% 6.7) 80.9% 7.3) 145.0% 6.5) 104.0% 5.9) 79.2% 5.4) 66.7% 5.3) 91.5% 3.1) 36.5% 5.5) 140.8% 3.5) 36.3% 4.4) 123.8% 3.3) 76.1% 0.0) 0.0% 1.8) 24.4% 3.9) 0.0% 3.6) 0.0% 0.0) 0.0% 1.8) 58.5% 1.3) 67.3% Male-Female=.53 SEVERE INJURY SITE TOTAL (MALE, FEMALE) FEM/MALE % IND-PUNE 12.5 CAN-LONDON 8.9 USA-LOUISIAN 7.6 USA-INDIANA 7.4 USA-TX NCDCHS 5.3 USA-CINCINN 5.0 USA-WASH DC 4.9 KOR-PUSAN 4.4 USA-MISSISSP 3.9 CAN-TORONTO 3.3 USA-TX-N MEX 3.1 CAN-HAMILTON 3.0 ISR-EMEKZYRL 2.7 USA-TX-MEX 2.5 DEU-FREIBURG 2.4 HKG-HONGKONG 2.3 USA-NH 2 2.1 BRA-SAOPAULO 1.9 USA-PENNSLVNA 1.9 MEX-NORTHERN 1.8 CHE-GERMAN 1.6 GBR-SCOTLAND 0.9 USA-NH 1 0.8 CAN-MANITOBA 0.7 CAN-MONTREAL 0.7 CHE-FRENCH 0.5 SGP-SINGAPORE 0.5 BEL-FLEMISH 0.5 AUS-ADELAIDE 0.4 NDL-AMSTRDAM 0.0 NZL-CHRISTCH 0.0 PRT-BRAGA 0.0 USA-UTAH 0.0 R: Tot-Male= .76, Tot-Female= (8.7 13.9) 159.2% (10.3 7.8) 75.3% (15.4 3.8) 24.7% (13.6 5.1) 37.6% (9.7 3.7) 37.8% (9.0 1.2) 13.7% (0.0 5.8) 0.0% (2.5 5.6) 219.8% (8.3 3.4) 40.2% (3.7 3.1) 84.6% (5.0 1.6) 32.5% (5.4 2.6) 47.9% (3.2 2.5) 78.3% (6.6 0.0) 0.0% (4.4 1.0) 23.6% (5.8 0.0) 0.0% (3.1 1.8) 59.1% (2.4 1.7) 69.7% (5.7 0.6) 10.8% (2.6 1.6) 60.5% (0.0 2.0) 0.0% (0.0 1.1) 0.0% (0.4 1.0) 227.9% (0.0 0.8) 0.0% (1.6 0.4) 26.7% (2.0 0.0) 0.0% (1.5 0.0) 0.0% (2.0 0.0) 0.0% (0.0 0.5) 0.0% (0.0 0.0) 0.0% (0.0 0.0) 0.0% (0.0 0.0) 14 0.0% (0.0 0.0) 0.0% .91, Male-Female= .49 FIGURE 1. THE HIGHER THE PERCENT WHO SEVERELY ASSAULTED A PARTNER, THE MORE PARTNERS WHO WERE INJURED (TOTAL) SCATTER PLOT EXAMPLE 25% r = 0.85 IND-PUNE 20% CAN-LOND USA-LOUI USA-INDI 15% USA-TX-N M MEX-JUAR USA-TX-NC CAN-TORO USA-CINC 10% KOR-PUSA USA-MISS CAN-HAMI USA-TX-M CAN-WINN NZL-CHRI BEL-FLEM USA-NH 2 ISR-EMEK HKG-HONG DEU-FREIUSA-NH 1 CAN-MONT BRA-SAOP SGP-SING PRT-BRAG CHE-GERM AUS-ADEL USA-PENN NDL-AMST USA-UTAH CHE-FREN 5% 0% 2% 4% 6% 8% 10% 12% 14% 16% 18% 20% 22% 24% Assault Severe Perpetration IDV study 15 CTS2 IDV study 16 CONCLUSIONS • HIGH RATES OF ASSAULT AND INJURY IN ALL COUNTRIES • RATES OF PERPETRATION BY WOMEN AND MEN ARE SIMILAR, EXCEPT MEN CAUSE MORE INJURY • THE INJURY DATA SHOWS THAT MANY ASSAULTS ARE NOT TRIVIAL • RESULTS ARE CONSISTENT WITH OTHER STUDIES OF STUDENTS • THERE ARE LARGE DIFFERENCES BETWEEN DIFFERENT COUNTRIES. – Presumably these are because of cultural and social organizational differences between the national contexts – We will test that theory in the lab projects IDV study 17 STRENGTHS OF THE IDV STUDY Well-validated instrument to measure partner violence – the Conflict Tctics Scales or CTS. Used in over 40 countries with respondents of all socioeconomic levels, including low education rural and urban populations and university students. Unusually wide range of risk factors. The personal and relationships profile or PRP measure 23 variables associated with partner violence Procedures were tested with more than 1,000 students at three different universities in the USA and in Ciudad Juarez in Mexico. Includes a scale to control for reluctance to disclose socially undesirable behavior such as PV (Social Desirability scale) 30 nations provide the opportunity to examine the effect of socio-cultural differences on risk factors for dating-violence, including sites in all major world regions. Locally salient issues for each site. Example: El Paso Texas site -- level of acculturation for a predominantly Mexican American sample. IDV study 18 LIMITATIONS OF THE IDVS • NOT A RANDOM SAMPLE OF ANY SPECIFIC UNIVERSE “Random” “Universe” Implications • NO ASSURANCE THAT TRANSLATIONS WERE DONE CORRECTLY • EVEN IF TRANSLATED CORRECTLY, CONCEPT MAY NOT BE MEANINGFUL IN ALL CULTURAL CONTEXTS • PROCEDURES WERE BIZARRE FOR STUDENTS IN SOME COUNTRIES • WEAK OR NO EVIDENCE OF VALIDITY FOR MOST OF THE MEASURES OF RISK FACTORS • NOT ENOUGH CASES IN A FEW COUNTRIES • OTHER? IDV study 19 WHY THE IDVS IS WORTH DOING DESPITE THE LIMITATIONS • NO OTHER DATA ON PV THAT IS COMPARABLE INTERNATIONALLY • PERMITS TESTS OF MANY THEORIES IDV study 20 POINTS TO BE SURE YOU UNDERSTAND • THE TWO MAIN PURPOSES OF THE IDVS AND WHAT THE DIFFERENCE IS • AN EXAMPLE OF A RESULT FROM EACH PURPOSE • WHAT A SCATTER PLOT AND REGRESSION LINE ARE (WILL BE CLEAR WHEN WE DO LAB C) • THE CONCEPT OF “RISK FACTOR” AND AN EXAMPLE • THE CONCEPT OF A “SOCIAL CAUSE” • THE CONCEPT OF MULTIPLE CAUSATION AND ITS IMPLICATIONS • LIMITATIONS OF THE IDVS • WHY THE STUDY IS WORTH DOING DESPITE THOSE LIMITATIONS IDV study 21 END FOR SOC 695 (2007) IDV study 22 SOME FINDINGS ON RISK FACTORS FOR VIOLENCE AGAINST A DATING PARTNER Each Tests A Theory About What Is Related To Or Causes Partner Violence Data On Risk Factors Is From The Personal And Relationships Profile IDV study 23 THE PERSONAL AND RELATIONSHIPS PROFILE (PRP) PSYCHOLOGICAL RISK FACTORS ASP ANTISOCIAL PERSONALITY BOR BORDERLINE PERSONALITY CH CRIMINAL HISTORY DEP DEPRESSION GHM GENDER HOSTILITY TO MEN GHW GENDER HOSTILITY TO WOMEN NH NEGLECT HISTORY PTS POST-TRAUMATIC STRESS DISORDER SC SELF-CONTROL SD SOCIAL DESIRABILITY RESPONSE BIAS SI SOCIAL INTEGRATION SUB SUBSTANCE ABUSE STR STRESSFUL CONDITIONS SAH SEXUAL ABUSE HISTORY VA VIOLENCE APPROVAL VS VIOLENT SOCIALIZATION SOCIAL RELATIONSHIP RISK FACTORS (BEHAVIOR TOWARDS OR BELIEFS ABOUT THE PARTNER) AM ANGER MANAGEMENT CP COMMUNICATION PROBLEMS CON CONFLICT DOM DOMINANCE JEL JEALOUSY NA NEGATIVE ATTRIBUTION RC RELATIONSHIP COMMITMENT RD RELATIONSHIP DISTRESS IDV study 24 DOES LOW SOCIAL INTEGRATION INCREASE THE RISK OF HITTING A PARTNER? SOCIAL INTEGRATION SCALE ITEMS Commitment I have goals in life that I try to reach I give up easily on difficult projects (R) Criminal Beliefs It’s all right to break the law as long as you don’t get hurt (R) To get ahead, I have done some things which are not right (R) Delinquent Peers I spend time with friends who have been in trouble with the law.(R) I have friends who have committed crimes (R) Involvement I attend a church, synagogue, or mosque once a month or more I rarely have anything to do with religious activities (R) Kin Network Availability I have family members who would help me out if I had a problem I share my thoughts with a family member IDV study 25 SOCIAL INTEGRATION OF MEXICAN AMERICAN AND NON-MEXICAN WHITE STUDENTS AND ASSAULTS ON DATING PARTNERS Ignacio Luis Ramirez Texas Technological University 0.35 Non-Mexican Mexican American Probability of Assault 0.3 0.25 0.2 0.15 0.1 0.05 0 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Social Integration Score IDV study 26 CRIMINAL HISTORY SCALE ITEMS PROPERTY CRIME EARLY ONSET CRIME Before age 15, I stole or tried to steal something worth more than $50.00 Before age 15, I stole money (from anyone, including family) LATER CRIME IDV study VIOLENT CRIME Before age 15, I physically attacked someone with the idea of seriously hurting them Before age 15, I hit or threatened to hit my parents Since age 15, I have stolen or Since age 15, I physically tried to steal something attacked someone with the worth more than $50.00 idea of seriously hurting them Since age 15, I have stolen Since age 15, I hit or money (from anyone, threatened to hit someone including family) who is not a member of my family. 27 IDV study 28 ARE COMMUNICATION PROBLEMS PART OF THE PROBLEM?` IDV study 29 E IDV study 30 RISK FACTORS FOR PSYSYCHOLOGICAL AGGRESSION (VERBAL ATTACKS) * RISK FACTORS ARE SIMILAR TO RISK FACTORS FOR PHYSICAL ASSAULT * PROBABLY BECAUSE PSYCHOLGICAL AND PHYSICAL ATTACKS ARE HIGHLY CORRELATED IDV study 31 CTS2 IDV study 32 THE LONGER THE RELATIONSHIP, THE GREATER THE PROBABILITY OF PSYCHOLOGICAL AGGRESSION Predicted Probability Psych Aggr Total 0.30 0.25 0.20 Females 0.15 Males 0.10 0.05 0.00 0.00 IDV study 5.00 10.00 15.00 20.00 25.00 Relationship Length (in months ) 30.00 33 THE PREVIOUS FOUR GRAPHS ILLUSTRATE TESTS OF FOUR THEORIES • • • • SOCIAL INTEGRATION CRIMINAL HISTORY COMMUNICATION PROBLEMS LENGTH OF THE RELATIONSHIP ALSO ILLUSTRATES THE INTER-RELATION OF THE SOCIAL AND THE PSYCHOLOGICAL CAUSES IDV study 34 WHAT IS A THEORY For Purposes Of This Course * AN EXPLANATION FOR WHY SOMETHING EXISTS, OCCURS, OR CHANGES * “PROVEN” OR ESTABLISHED THEORY VERSUS HYPOTHESIZED THEORY • Proven means that the accumulated the evidence has reached the point where there is a concensus among scientists that the theory is correct. Examples: Heliocentric theory of the solar system Evolution Birds descended from dinasors now proven * ANY THEORY ABOUT HUMAN BEHAVIOR THAT IDENTIFIES ONLY ONE CASUSE IS PROBABLY WRONG In the sense of incomplete because almost all behavior has multiple causes. Examples: Drinking problems Male dominance Social learning IDV study 35 THE CONCEPT OF A “RISK FACTOR” “RISK FACTOR” IS A SYNONYM FOR THE INDEPENDENT VARIABLE WHEN IT REFERS TO •A CONDITION WHICH IS ASSOCIATED WITH AND INCREASED PROBABILITY OF A DISEASE OR PROBLEM • EXAMPLES: –SMOKING AND DEATH FROM SMOKING RELATED DISEASE (33% chance) –MALE DOMINANCE AND WIFE BEATING (20% chance - 7 fold increase) –SPANKING AND DELINQUENCY (24% chance - 5 fold increase) –BINGE DRINKING AND WIFE BEATING (19% chance - 3 fold increase) IDV study 36 IDV study 37 CONCLUSIONS •VIOLENCE AGAINST DATING PARTNERS HAS MANY “CAUSES” (“RISK FACTORS”) •THE “CAUSES” OF VIOLENCE AGAINST PARTNERS ARE SIMILAR FOR MEN AND WOMEN •EACH ADDITONAL RISK FACTOR INCREASE THE PROBABILITY OF VIOLENCE, BUT NONE GUARANTEE VIOLENCE •MOST OF THE RISK FACTORS ARE THINGS THAT CAN BE CHANGED. SO PREVENTION OF FAMILY VIOLENCE IS A REALISTIC SOCIAL POLICY GOAL IDV study 38