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Sibling abuse includes the physical, psychological, or sexual abuse of one sibling by another. A fourth category that brought attention from researchers during the first decade of the 21st century is sibling relational abuse, which derives from relational aggression.
Almost all brothers and sisters fight. Abuse occurs when one sibling consistently intimidates, terrorizes or controls another.
Sibling abuse occurs most often in dysfunctional, neglectful or abusive homes when parents fail to set boundaries or discipline abusive children. A 1982 study found that of 60 per cent of children who witnessed abuse between their parents later acted out the scene with their siblings. They also are more likely to abuse others when they grow up.
- 1 Types of sibling abuse and prevalence
- 2 Identifying sibling abuse
- 3 Risk factors
- 4 Potential effects of sibling abuse
- 5 Preventing sibling abuse
- 6 Treatment of sibling abuse
- 7 Media portrayals
- 8 Notable examples
- 9 See also
- 10 References
- 11 Further reading
Types of sibling abuse and prevalenceEdit
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According to many authorities and researchers, sibling abuse is one of the most common forms of abuse, however, its occurrence is largely overlooked by society at large and by investigators into interpersonal violence:
Sibling physical abuse is far more common than peer bullying and other forms of family abuse, such as spousal or child abuse. It includes but is not limited to hitting, biting, slapping, stabbing, shoving, punching and even tickling. It is very difficult to calculate prevalence rates for different reasons that lie within the family or in cultural norms and beliefs. Within the family, adults have difficulty recognizing abuse because sibling competition and conflict are very common. Aggression is even considered to have a positive side in sibling relationships because it helps children gain skills to build relationships outside the family circle. Other individuals prefer to deny the situation and continue family life as if the problem didn't exist. The victim does not complain because of fear of retaliation from the perpetrator or because he/she is unable to recognize abuse from acceptable sibling aggression. On the other hand, cultural norms and beliefs deter individuals from openly addressing it because they don't want to be pointed out by society. Correct reporting of sibling abuse faces multiple challenges starting with the fact that it is under reported for the reasons stated above, professional child care providers having considerably different definitions of the term and the lack of a system to track the wide information. Sibling physical abuse persists from childhood through adulthood, with prevalence rates varying across studies and its intensity and frequency declining as the victim and or perpetrator grow up.
Hotaling, Straus, & Lincoln found that sibling aggression was somewhat common even in families that could not be classified as pervasively abusive, with 37% of 498 children committing at least one act of serious abuse during the previous year; in abusive families, 100% of children committed at least one act of serious abuse. Irfan and Cowburn report that in Pakistani immigrant families in the UK, "Among perpetrators of abuse, 35% (highest proportion) of physical abuse was perpetrated by siblings, 33% by mothers and 19% by fathers."
Several studies show that sisters are more likely to be victimized by brothers than vice versa. However, sisters can also abuse brothers, and traditional gender roles can allow such abuse to go unchecked. Schwartz and colleagues found that while women are more likely to use physical aggression during disagreements, parents are more likely to view male aggression more negatively than female aggression, even when the abusive acts are identical (e.g., boys throwing objects during a fight is seen as a more serious transgression than girls throwing objects during a fight). Similarly, Tyree and Malone report that women's violence as adults is more strongly correlated with aggression towards siblings during childhood.
Psychological abuse includes name calling, belittling, teasing, insulting, threatening to harm, and the destruction of personal property. Adults, be it the parents or professional care providers, have difficulty differentiating between psychological aggression and abuse because it is difficult to identify when the balance of power is not evenly distributed, hence, the consequences of the aggression are not only injury but also control or domination of one sibling over the other. Although it has been found to be the most prevalent type of abuse in sibling conflict, prevalence rates are difficult to calculate because of the difficulty in differentiating aggression from abuse. Whipple and Finton report that "Psychological maltreatment between siblings is one of the most common yet often underrecognized forms of child abuse. Bagley and Ramsey, Mullen, Martin, Anderson, Romans and Herbison, Kurtz, Gaudin, Wodarski, and Howing, and Beitchman et al., are some of the researchers that have found different negative psychological, academic and social consequences to be related to sibling aggression and abuse but causal inference requires more study. Caffaro, J. and Conn-Caffaro, A. report, based on their research, that adult sibling abuse survivors have much higher rates of emotional cutoff (34%) with brothers and sisters than what is evident in the general population (<6%).
Sibling sexual abuse includes penetration, touching, and other behaviors with sexual connotation that not necessarily require touching. To differentiate sexual abuse from sexual curiosity or playing innocent games there needs to be coercion, secrecy and domination over one sibling. Prevalence rates are also difficult to calculate for several reasons: victims do not realize that they are suffering abuse until they reach maturity and have a better understanding of the role they played during the encounters, they are afraid of reporting, and there is no consensus on a definition of sibling sexual abuse. Ryan writes how, "Child protection has focused on adult-child [sexual] relationships, yet we know that more than 40% of all juvenile-perpetrated child sexual abuse is perpetrated in sibling relationships."
Caffaro & Conn-Caffaro (1998; 2005) define sibling sexual abuse as sexual behavior between siblings for which the victim is not developmentally prepared, which is not transitory, and which does not reflect age-appropriate curiosity. It may or may not involve physical touching, coercion, or force. Bank and Kahn found that most sibling incest fell into one of two categories: "nurturance-oriented incest" and "power-oriented incest". The former is characterized by expressions of affection and love, while the latter is characterized by force and domination.
Rudd and Herzberger report that brothers who committed incest were more likely to use force than fathers who commit incest (64% vs. 53%). Similarly, Cyr and colleagues found that about 70% of sibling incest involved sexual penetration, substantially higher than other forms of incest. Bass and colleagues write that "sibling incest occurs at a frequency that rivals and may even exceed other forms of incest," yet only 11% of studies into child sex abuse examined sibling perpetrators. Rayment and Owen report that "[in comparison of] the offending patterns of sibling offenders with other teenage sex offenders [...] Sibling abusers admitted to more sexual offences, had a longer offending history and a majority engaged in more intrusive sexual behaviour than other adolescent sex offenders. The sibling perpetrator has more access to the victim and exists within a structure of silence and guilt." A survey of eight hundred college students reported by David Finkelhor in Journal of Marriage and Family Counseling found that fifteen percent of females and ten percent of males had been sexually abused by a sibling.
Relational abuse includes gossiping, humiliating in front of others, preventing socialization with desired groups. It is challenging to identify and calculate prevalence rates because it is normally done indirectly so the perpetrator is unknown to the victim. Additionally, an apparently good sibling relationship, with no physical or emotional direct aggression, may hide this type of abuse. Likewise, physical and emotional abuse are more notorious in bad sibling relationships.
Identifying sibling abuseEdit
"As a rule, parents and society expect fights and aggression among siblings. Because of this, parents often don't see sibling abuse as a problem until serious harm occurs."
Sibling rivalry, competition and disagreements are considered a normal component of childhood and adolescence. To identify physical, psychological and relational sibling abuse, practitioners and parents need observe behavior and ask questions about the sibling's relationships that will help them understand if there are characteristics that differentiate aggression from abuse. Sexual sibling abuse requires additional considerations. Victims may initially deny the existence of any type of abuse but this may be because they haven't realized it yet. Different questions about the prevalence of types of aggression, frequency, intention of harm, magnitude of the aggression and unidirectional dominance help assess the existence of abuse. Regarding sexual abuse, individuals are less likely to openly talk about it, unlike other forms of abuse such as physical or psychological. For this reason, in addition to ask direct questions about sibling sexual abuse, practitioners and parents must look out for behaviors that may indicate the presence of sexual abuse. Another challenge comes when differentiating between sexual abuse and adequate sexual behavior. The biggest difference relies in that incest happens with the consensus of both siblings while sexual abuse does not. A victim may not be aware that he/she did not consent because of innocence or lack of understanding of what was happening. The latter generally happens to children who are too young to understand sexual implications and boundaries.
Weihe suggests that four criteria should be used to determine if questionable behavior is rivalry or abusive. First, one must determine if the questionable behavior is age appropriate, since children use different conflict-resolution tactics during various developmental stages. Second, one must determine if the behavior is an isolated incident or part of an enduring pattern: abuse is, by definition, a long-term pattern rather than occasional disagreements. Third, one must determine if there is an "aspect of victimization" to the behavior: rivalry tends to be incident-specific, reciprocal and obvious to others, while abuse is characterized by secrecy and an imbalance of power. Fourth, one must determine the goal of the questionable behavior: the goal of abuse tends to be embarrassment or domination of the victim.
This category of risk factors associated with sibling abuse looks at the family system as a whole. It includes negative and conflictual parent-child relationships, parent hostility toward a child, spousal abuse, partner conflict, marital conflict, mother's marital dissatisfaction and negative emotional expressiveness, maternal self-criticism, financial stress, low family cohesion, family disorganization and household chaos, husband's losses of temper, low maternal education, and family triangulation.
This category of risk factors associated with sibling abuse examines the parenting behavior of adult caregivers. It includes parental differential treatment of children, fathers favoring later-born sisters, active and direct judgmental comparison, parents labeling their children "bad-good" and "easy-different", low parental involvement, particularly by fathers, ineffective parenting, inconsistent discipline, coercive parenting, maternal coercive, rejecting, and over-controlling behaviors, parental abuse of children, parent's use of violence to resolve parent-child conflict, parental neglect and approval of aggression, corporal punishment, not providing supervision, not intervening in sibling conflict, not acknowledging child-voiced claims of maltreatment, not reinforcing pro-social behaviors, and restricting children's efforts to diversify interests and specialization.
This category of risk factors associated with sibling abuse considers individual traits of the offender child and the victim child. For offender children, known individual risk factors include lack of empathy for victims, aggressive temperament, lower or higher self-esteem than peers, unmet personal needs for physical contact in emotion-deprived environments, experience of victimization, including by siblings, sibling care taking of younger brothers and sisters, and boredom. For victim children, a known risk factor is psychological distress such as anger, depression, and anxiety from violence victimization by siblings (linked to re-victimization).
Other risk factorsEdit
Several other risk factors are associated with sibling abuse. One is birth order and age spacing. Martin and Ross found that first-born children were more likely to be sibling abuse offenders. Imitating an older sibling's aggressive behavior, being given the task of sibling care taking, and close age spacing were also found be closely associated with sibling abuse.
Another risk factor is gender. The presence of a male child within the sibling group and older brother-younger sister pairs are associated with the occurrence of sibling abuse and being female is associated with the experience of victimization by a sibling.
Sociocultural background also factors into sibling abuse. Some known sociocultural background risk factors include cultural practices such as primogeniture and patriarchy, disability of a sibling, family economic pressure, excessive sibling caregiving, and ethnic/cultural background in which sibling aggression is widely condoned.
Potential effects of sibling abuseEdit
Potential effects of sibling sexual abuse include difficulty separating pleasure from pain and fear from desire in a sexual relationship, depression, eating disorders, substance abuse, low self-esteem, and suicide, re-victimization in adulthood, prostitution in later life, difficulty in developing and sustaining intimate relationships, trouble negotiating boundaries, sexual issues, and interdependency in relationships, shame, fear, humiliation, anger, and guilt, severe psychiatric disorders such as dissociative coping and complex post traumatic stress disorder, wide variety of health and mental health issues, significant problems with affect regulation, impulse control, somatization, sense of self, cognitive distortions, and problems with socialization, and higher risk of pregnancy than father-daughter incest.
Potential effects of sibling violence include severe symptoms of trauma, anxiety, and depression, including sleeplessness, suicidal ideation, and fear of the dark, loneliness and psychological difficulties, and aggression and delinquency.
Preventing sibling abuseEdit
Jonathan Caspi identified several prevention methods for children and families, educators and practitioners, researchers, and the culture at large in Sibling Aggression: Assessment and Treatment (2012). For children and families, pro-social skill development to increase social-emotional competencies with siblings and parental training can be used to prevent sibling abuse. For educators and practitioners, addressing sibling relationships in the curriculum can help prevent sibling abuse. For researchers, giving attention to sibling relationships and developing prevention programs in collaboration with practitioners are potential prevention methods for sibling abuse. For the culture at large, Caspi proposes not accepting sibling aggression as normal, public awareness and educational campaigns, and making sibling aggression visible.
Treatment of sibling abuseEdit
John V. Caffaro outlines clinical best practices for treatment of sibling abuse in Sibling Abuse Trauma: Assessment and Intervention Strategies for Children, Families, and Adults (2014). They include “extra precautions to ensure the victim's safety, such as locks on doors, increased adult supervision, and cooperation of parents, extended family members, and the community”, “individual treatment for the victim and the offender, often with different clinicians possessing expertise in child abuse trauma”, and “no conjoint sibling or family meetings with the offender until he or she has accepted full responsibility for the abuse and until the therapist is satisfied that the family can and will protect the victim from further abuse”.
The 1991 made-for-TV movie "My Son, Johnny" is a rare fictionalized portrayal of sibling abuse. The film stars Corin Nemec as a teenager victimized by his older brother, played by Rick Schroder. The film was inspired by the real-life case of Philadelphia fifteen-year-old Michael Lombardo, tried and acquitted for the 1985 killing of his nineteen-year-old brother, Francis "Frankie" Lombardo, who had battered and abused him for years.
British soap opera, Brookside, ran a controversial storyline in 1996, featuring incest between siblings Nat and Georgia Simpson that resulted in a pregnancy, which was followed by an abortion. The sympathetic portrayal of the situation attracted criticism from commentators such as Peter Hitchens (in his book The Abolition of Britain).
Canadian animated series Total Drama Pahkitew Island, the second half of the fifth season of Total Drama, brings in Amy and Samey, the show's first twin sibling pair. Amy is the mean twin, while Samey (who prefers to be "Sammy") is the nice twin who has to deal with Amy's abuse towards her. Amy even attempts to kill Samey, but she survives by having a parachute. Later, a contestant bonds with Samey and gives her the courage to stand up to Amy and get her eliminated.
Cheyenne Brando, the daughter of the legendary actor Marlon Brando, confessed that her brother Christian seemed to be in love with her and that he was jealous of her boyfriend Dag Drollet; that is why Christian killed him in 1990, according to Cheyenne. Christian stated during his trial that Cheyenne told him that Dag was abusive to her, that he wanted to protect her and that he never meant to kill Dag; it was a terrible accident. Christian was sentenced to ten years in jail in 1991 and Cheyenne committed suicide in 1995. Cheyenne was abusive toward her two sisters, Maimiti and Raiatua, as well as with Marlon Brando, and Tarita, her parents, particularly her mother. Tarita Teriipaia wrote a book in 2005, which revealed Cheyenne terrorized her own family when she began to suffer from schizophrenia.
In 2013, the Australian actor Hugh Jackman opened up about the physical and verbal abuse by his older brother. He said the abuse helped his acting in Wolverine and that when his brother apologized, Jackman felt released.
- R., Wiehe, Vernon (1997). Sibling abuse : hidden physical, emotional, and sexual trauma (2nd ed.). Thousand Oaks, Calif.: Sage Publications. ISBN 9780761910091. OCLC 811563767.
- Caspi, Jonathan (2012). Sibling Aggression: Assessment and Treatment. eBook Academic Collection (EBSCOhost): Springer Publishing Company. ISBN 9780826124159.
- University of Michigan Health System: Sibling abuse
- Cyr, M., Wright, J., McDuff, P., & Perron, A. (2002). Intrafamilial sexual abuse: Brother-sister incest does not differ from father-daughter and stepfather-stepdaughter incest. Child Abuse and Neglect, 26, p. 957-973.
- Laviola, M. (1992). Effects of older brother-younger sister incest: A study of the dynamics of 17 cases. Child Abuse and Neglect, 16, p. 409-421.
- Pfout, Schopler, & Henley, "Forgotten Victims of Family Violence," Social Work, July 1982.
- Stepp, G. "From Sibling Violence to Brotherly Love"
- Hotaling, G. T., Straus, M. A., & Lincoln, A. J. (1990). Intrafamily violence and crime and violence outside the family. In M. A. Straus and R. J. Gelles (Eds.), Physical Violence in American Families (p. 431-470). New Brunswick, NJ: Transaction Books
- Disciplining, Chastisement and Physical Child Abuse: Perceptions and Attitudes of the British Pakistani Community
- Graham-Bermann, S. A. and Cutler, S. E. (1994). The Brother-Sister Questionnaire: Psychometric assessment and discrimination of well-functioning from dysfunctional relationships. Journal of Family Psychology, 8(2), p. 224-238.
- Finkelhor, D. and Baron, L. (1986). Risk factors for child sexual abuse. Journal of Interpersonal Violence, 1(1), p. 43-71.
- Schwartz, M., O'Leary, S. G., & Kendziora, K. T. (1997). Dating aggression among high school students. Violence and Victims, 12, 295-305.
- Tyree, A., & Malone, J. (1991). How can it be that wives hit husbands as much as husbands hit wives and none of us knew it? Paper presented at the annual meeting of the American Sociological Association.
- Whipple, E. and Finton, S. 1995. Psychological maltreatment by siblings: An unrecognized form of abuse. Child and Adolescent Social Work Journal, Vol. 12, no. 2, pp 135-146
- Caffaro, John; Conn-Caffaro, Allison (2005-07-01). Treating sibling abuse families. 10.
- Ryan, G. (2005) Preventing Violence and Trauma in the Next Generation. J Interpers Violence 2005; 20; 132 doi:10.1177/0886260504268605
- Bank, S. P. & Kahn, M. D. (1982). The sibling bond. New York, NY: Basic Books, Inc.
- Rudd, J. M., and Herzberger, S. D. (1999). Brother-sister incest/father-daughter incest: A comparison of characteristics and consequences. Child Abuse and Neglect, 23, pp. 915-928.
- Bass, L., Taylor, B., Kunutson-Martin, C. and Huenergardt, D. (2006) Making Sense of Abuse: Case Studies in Sibling Incest. Contemporary Family Therapy, Vol 28, no 1, pp 87-109
- S. Rayment and N Owen. (1999) WORKING WITH INDIVIDUALS AND FAMILIES WHERE SIBLING INCEST HAS OCCURRED: THE DYNAMICS, DILEMMAS AND PRACTICE IMPLICATIONS. Paper presented at the Children and Crime: Victims and Offenders Conference convened by the Australian Institute of Criminology and held in Brisbane, 17–18 June 1999
- Finkelhor, D. (1978). Psychological, cultural, and family factors in incest and family sexual abuse. Journal of Marriage and Family Counseling, 4, 41-79.
- Caspi, Jonathan (2012). Sibling Aggression: Assessment and Treatment. Springer Publishing Company. pp. 14–19, 223–226.
- Hoffman, Kiecolt, & Edwards (2005). "Physical violence between siblings: a theoretical and empirical analysis". Journal of Family Issues. 2698): 185–200.CS1 maint: multiple names: authors list (link)
- Williams, Conger, & Blozis (2007). "The development of interpersonal aggression during adolescence: the importance of parents, siblings, and family economics". Child Development. 78(50 (5): 1526–1542. doi:10.1111/j.1467-8624.2007.01081.x. PMID 17883446.CS1 maint: multiple names: authors list (link)
- Haj-Yahia & Dawud-Noursi (1998). "Predicting the use of different conflict tactics among Arab siblings in Israel: a study based on social learning theory". Journal of Family Violence. 13: 81–103. doi:10.1023/A:1022864801027.
- Hotaling, Straus, & Lincoln (Straus & Gelles Eds.) (1990). Intrafamily violence and crime and violence outside the family in Physical violence in American families: Risk factors and adaptations to violence in 8,145 families. pp. 431–470.CS1 maint: multiple names: authors list (link)
- Stocker & Youngblade (1999). "Marital conflict and parental hostility: links with children's sibling and peer relationships". Journal of Family Psychology. 13 (4): 598–609. doi:10.1037/0893-3220.127.116.118.
- Stocker, Ahmed, & Stall (1997). "Marital satisfaction and maternal emotional expressiveness: links with children's sibling relationships". Social Development. 6 (3): 373–385. doi:10.1111/j.1467-9507.1997.tb00112.x.CS1 maint: multiple names: authors list (link)
- Garcia, Shaw, Winslow, & Yaggi (2000). "Destructive sibling conflict and the development of conduct problems in young boys". Developmental Psychology. 36 (1): 44–53. doi:10.1037/0012-1618.104.22.168. PMID 10645743.CS1 maint: multiple names: authors list (link)
- MacKinnon-Lewis, Starnes, Volling & Johnson (1997). "Perceptions of parenting as predictors of boys' sibling and peer relations". Developmental Psychology. 33 (6): 1024–1031. doi:10.1037/0012-1622.214.171.1244.CS1 maint: multiple names: authors list (link)
- Volling & Belsky (1992). "The contribution of mother-child and father-child relationships to the quality of sibling interaction: a longitudinal study". Child Development. 63 (5): 1209–1222. doi:10.2307/1131528. JSTOR 1131528.
- Hardy (2001). "Physical aggression and sexual behavior among siblings: a retrospective study". Journal of Family Violence. 16 (3): 255–268. doi:10.1023/A:1011186215874.
- Williams, Conger, & Blozis (2007). "The development of interpersonal aggression during adolescence: the importance of parents, siblings, and family economics". Child Development. 78 (5): 1526–1542. doi:10.1111/j.1467-8624.2007.01081.x. PMID 17883446.CS1 maint: multiple names: authors list (link)
- Brody, Stoneman, & McCoy (1994). "Forecasting sibling relationships in early adolescence from child temperaments and family processes in middle childhood". Child Development. 65 (3): 771–784. doi:10.2307/1131417. JSTOR 1131417.CS1 maint: multiple names: authors list (link)
- Eriksen & Jensen (2006). "All in the family? Family environment factors in sibling violence". Journal of Family Violence. 21 (8): 497–507. doi:10.1007/s10896-006-9048-9.
- Kretschmer & Pike (2009). "Young children's sibling relationship quality: distal and proximal correlates". Journal of Child Psychology and Psychiatry. 50 (5): 581–589. doi:10.1111/j.1469-7610.2008.02016.x. PMID 19236529.
- Ensor, Marks, Jacobs, & Hughes (2010). "Trajectories of antisocial behaviour towards siblings predict antisocial behaviour towards peers". Journal of Child Psychology and Psychiatry. 51 (11): 1208–1216. doi:10.1111/j.1469-7610.2010.02276.x. PMID 20584100.CS1 maint: multiple names: authors list (link)
- Haskins (2003). "Treating sibling incest using a family systems approach". Journal of Mental Health Counseling. 25 (4): 337–350. doi:10.17744/mehc.25.4.r0vm1whayctmlmww.
- Kerig (1995). "Triangles in the family circle: effects of family structure on marriage, parenting, and child adjustment". Journal of Family Psychology. 9 (1): 28–43. doi:10.1037/0893-3126.96.36.199.
- Kiselica & Morrill-Richards (2007). "Sibling maltreatment: the forgotten abuse". Journal of Counseling & Development. 85 (2): 148–160. doi:10.1002/j.1556-6678.2007.tb00457.x.
- Dunn (Pillimer & McCartney Eds.) (1991). The developmental importance of differences in siblings experiences within the family in Parent-child relations throughout life.
- Updegraff, Thayer, Whiteman, Denning, & McHale (2005). "Relational aggression in adolescents' sibling relationships: links to sibling and parent-adolescent relationship quality". Family Relations. 54 (3): 373–385. doi:10.1111/j.1741-3729.2005.00324.x.CS1 maint: multiple names: authors list (link)
- Feinberg & Hetherington (2001). "Differential parenting as a within-family variable". Journal of Family Psychology. 15 (1): 22–37. doi:10.1037/0893-3188.8.131.52. PMID 11322082.
- Schachter (1985). "Sibling deidentification in the clinic: devil v. angel". Family Process. 24 (3): 415–427. doi:10.1111/j.1545-5300.1985.00415.x. PMID 4043356.
- Schachter & Stone (1995). "Difficult sibling, easy sibling: temperament and the within-family environment". Child Development. 56 (5): 1335–1344. doi:10.2307/1130248. JSTOR 1130248.
- Bank, Burraston, & Snyder (2004). "Sibling conflict and ineffective parenting as predictors of adolescent boys' antisocial behavior and peer difficulties: additive and interactional effects". Journal of Research on Adolescence. 14 (1): 99–125. doi:10.1111/j.1532-7795.2004.01401005.x.CS1 maint: multiple names: authors list (link)
- Bank, Patterson, & Reid (Brody, Ed.) (1996). Negative sibling interaction patterns as predictors of later adjustment problems in adolescent and young adult males in Sibling relationships: their causes and consequences. pp. 197–229.CS1 maint: multiple names: authors list (link)
- Means-Burleson (2002). "Aggression: family and sibling correlates". Dissertaion Abstracts International: Section B: The Sciences and Engineering. 63(6-B): 3015.
- Yu (2008). "Reexamining aggression and social affordance in sibling relationships: taking a closer look at neglected characteristics". Dissertation Abstracts International: Section B: The Sciences and Engineering. 68(11-B): 7693.
- Button & Gealt (2010). "High risk behaviors among victims of sibling violence". Journal of Family Violence. 25 (2): 131–140. doi:10.1007/s10896-009-9276-x.
- Graham-Burmann, Cutler, Litzenberger, & Schwartz (1994). "Perceived conflict and violence in childhood sibling relationships and later emotional adjustment". Journal of Family Psychology. 8 (1): 85–97. doi:10.1037/0893-3184.108.40.206.CS1 maint: multiple names: authors list (link)
- Rosenthal & Doherty (1984). "Serious sibling abuse by preschool children". Journal of the American Academy of Child Psychiatry. 23 (2): 186–190. doi:10.1097/00004583-198403000-00010. PMID 6715740.
- Whipple & Finton (1995). "Psychological maltreatment by siblings: an unrecognized form of abuse". Child and Adolescent Social Work Journal. 12 (2): 135–146. doi:10.1007/BF01876209.
- Bennett (1990). "Nonintervention into siblings' fighting as a catalyst for learned helplessness". Psychological Reports. 66 (1): 139–145. doi:10.2466/pr0.19220.127.116.11. PMID 2183255.
- Wiehe (1997). Sibling abuse: hidden physical, emotional, and sexual trauma. Sage Publications.
- Bryant & Crockenberg (1980). "Correlates and dimensions of prosocial behavior: a study of female siblings with their mothers". Child Development. 51 (2): 529–544. doi:10.2307/1129288. JSTOR 1129288.
- Sulloway (1996). Born to rebel: birth order, family dynamics, and creative lives. New York: Pantheon Books.
- Silverman (1999). "Sibling violence: its relation to childhood observation of caretaker violence and factors derived from the brother-sister questionnaire". Dissertation Abstracts International: Section B: The Sciences and Engineering. 60(5-B): 2368.
- Munn & Dunn (1988). "Temperament and the developing relationship between siblings". International Journal of Behavioral Development. 12 (4): 433–451. doi:10.1177/016502548901200402.
- Hanson, Henggeler, Harris, Cigrang, Schinkel, Rodrigue; et al. (1992). "Contributions of sibling relations to the adaptation of youths with insulin-dependent diabetes mellitus". Journal of Consulting and Clinical Psychology. 60 (1): 104–112. doi:10.1037/0022-006X.60.1.104.CS1 maint: multiple names: authors list (link)
- Bank & Kahn (1997). The sibling bond. Basic Books.
- Caffaro & Conn-Caffaro (2005). "Treating sibling abuse families". Aggression and Violent Behavior. 10 (5): 604–623. doi:10.1016/j.avb.2004.12.001.
- Baum (1998). "Correlates of sibling violence". Dissertation Abstracts International: Section B: The Sciences and Engineering. 58(11-A): 4442.
- Green (1984). "Child abuse by siblings". Child Abuse & Neglect. 8 (3): 311–317. doi:10.1016/0145-2134(84)90072-3. PMID 6541083.
- Prochaska & Prochaska (1985). "Children's views of the causes and "cures" of sibling rivalry". Child Welfare. 64 (4): 427–433.
- Cuevas, Finkelhor, Clifford, Ormrod, & Turner (2010). "Psychological distress as a risk factor for re-victimization in children". Child Abuse & Neglect. 34 (4): 235–243. doi:10.1016/j.chiabu.2009.07.004. PMID 20304492.CS1 maint: multiple names: authors list (link)
- Tuner, Finkelhor, & Ormrod (2010). "Poly-victimization in a national sample of children and youth". American Journal of Preventive Medicine. 38 (3): 323–330. doi:10.1016/j.amepre.2009.11.012. PMID 20171535.CS1 maint: multiple names: authors list (link)
- Martin & Ross (1995). "The development of aggression within sibling conflict". Early Education and Development. 6 (4): 335–358. doi:10.1207/s15566935eed0604_4.
- Patterson (Block & Radke-Yarros Eds.) (1986). The contribution of siblings to training for fighting: a micro social analysis in Development of antisocial and prosocial behavior: research, theories, and issues. New York: Academic Press. pp. 235–261.
- Aguilar, O'Brien, August, Aoun, & Hektner (2001). "Relationship quality of aggressive children and their siblings: a multi-informant, multi-measure investigation". Journal of Abnormal Child Psychology. 29 (6): 479–489. doi:10.1023/A:1012273024211. PMID 11761282.CS1 maint: multiple names: authors list (link)
- Noland, Lille, McDermott, Coulter, & Seraphine (2004). "Is adolescent sibling violence a precursor to college dating violence?". American Journal of Health Behavior. 28 (1): S13–S23. doi:10.5993/ajhb.28.s1.3.CS1 maint: multiple names: authors list (link)
- Lockwood (2002). "Examination of siblings' aggression styles: do sisters show more relational aggression than brothers?". Dissertation Abstracts International: Section B: The Sciences and Engineering. 63(5-B): 2621.
- Randall (1992). "Adolescents may experience home, school abuse; their future draws researchers' concern". Journal of the American Medical Association. 267 (23): 3127–3128. doi:10.1001/jama.1992.03480230019004.
- Buhrmester & Furman (1990). "Perceptions of sibling relationships during middle childhood and adolescence". Child Development. 61 (5): 1387–1398. doi:10.2307/1130750. JSTOR 1130750.
- Atwood (2001). "Gender bias in families and its clinical implication for women". Social Work. 46 (1): 23–36. doi:10.1093/sw/46.1.23. PMID 11217491.
- Hoffman & Edwards (2004). "An integrated theoretical model of sibling violence and abuse". Journal of Family Violence. 19 (3): 185–200. doi:10.1023/B:JOFV.0000028078.71745.a2.
- Linares (2006). "An understudied form of intra-family violence: sibling-to-sibling aggression among foster children". Aggression and Violent Behavior. 11: 95–109. doi:10.1016/j.avb.2005.07.001.
- Rapoza, Cook, Zaveri, & Malley-Morrison (2010). "Ethnic perspectives on sibling abuse in the United States". Journal of Family Issues. 31 (6): 808–829. doi:10.1177/0192513X09359158.CS1 maint: multiple names: authors list (link)
- Caffaro, John (2014). Sibling Abuse Trauma: Assessment and Intervention Strategies for Children, Families, and Adults. Routledge. pp. 78–84, 123–126.
- Whelan (2003). "A much neglected risk factor in elderly mental disorders". Current Opinion in Psychiatry. 16: 609–614. doi:10.1097/00001504-200311000-00002.
- Canavan, Meyer, & Higgs (1992). "The female experience of sibling incest". Journal of Marital and Family Therapy. 18 (2): 129–142. doi:10.1111/j.1752-0606.1992.tb00924.x.CS1 maint: multiple names: authors list (link)
- Finkelhor (1980). "Sex among siblings: a survey on prevalence, variety, and effects". Archives of Sexual Behavior. 7 (3): 171–194. doi:10.1007/BF01542244. PMID 7396691.
- McVeigh (2003). Individualization, individuality, inferiority, and the internet: Japanese university students and email in Japanese Cybercultures. Routledge. pp. 19–33.
- Rudd & Hertzberger (1999). "Brother-sister incest-father-daughter incest: a comparison of characteristics and consequences". Child Abuse & Neglect. 23 (9): 915–928. doi:10.1016/S0145-2134(99)00058-7. PMID 10505905.
- Thompson (2009). "Sibling incest: a model for group practice with adult female victims of brother-sister incest". Journal of Family Violence. 24 (7): 531–537. doi:10.1007/s10896-009-9251-6.
- Wiehe (1990). Sibling abuse: hidden physical, emotional, and sexual trauma. Lexington Books.
- Worling (1995). "Adolescent sibling incest offenders: differences in family and individual functioning when compared to adolescent non sibling sex offenders". Child Abuse & Neglect. 19 (5): 633–643. doi:10.1016/0145-2134(95)00021-Y. PMID 7664142.
- Briere & Runtz (1988). Post sexual abuse trauma in Lasting effects of child sexual abuse. pp. 85–99.
- Russell (1986). The secret trauma: incest in the lives of girls and women. Basic Books.
- Bagley & Young (1987). "Juvenile prostitution and child sexual abuse: a controlled study". Canadian Journal of Community Mental Health. 6 (1): 5–26. doi:10.7870/cjcmh-1987-0001.
- Harlan, Rogers, & Slattery (1981). Male and female adolescent prostitutes. Washington, DC: US Department of Human Services.CS1 maint: multiple names: authors list (link)
- Briere (1992). Child abuse trauma. Sage.
- Courtois (2010). Healing the incest wound: adult survivors in therapy. W.W. Norton & Co.
- Finkelhor, Hotaling, Lewis, & Smith (1989). "Sexual abuse and its relationship to later sexual satisfaction, marital status, religion, and attitudes". Journal of Interpersonal Violence. 4 (4): 279–399. doi:10.1177/088626089004004001.CS1 maint: multiple names: authors list (link)
- Caffaro (2011). "Introduction to the special issue: siblings and groups". Groups. 35 (4): 273–277.
- Briere, Scott, & Weathers (2005). "Peritraumatic and persistent dissociation in the presumed etiology of PTSD". American Journal of Psychiatry. 162 (12): 2295–2301. doi:10.1176/appi.ajp.162.12.2295. PMID 16330593.CS1 maint: multiple names: authors list (link)
- Brown (Courtois & Ford Eds.) (2009). Assessment of attachment and abuse history and adult attachment style in Treating complex traumatic stress disorders, an evidence-based guide. Guilford Press. pp. 124–126.
- Putnam (2003). "Ten-year research update review: child sexual abuse". Journal of the American Academy of Child and Adolescent Psychiatry. 42 (3): 269–278. doi:10.1097/00004583-200303000-00006. PMID 12595779.
- Felitti, Anda, Nordenberg, Williamson, Spitz, Edwards, & Marks (1998). "The relationship of adult health status to childhood abuse and household dysfunction". American Journal of Preventive Medicine. 14 (4): 245–258. doi:10.1016/S0749-3797(98)00017-8. PMID 9635069.CS1 maint: multiple names: authors list (link)
- Havig (2008). "The health care experiences of adult survivors of child sexual abuse: a systematic review of the literature". Trauma, Violence, and Abuse. 9 (1): 19–33. doi:10.1177/1524838007309805. PMID 18182629.
- Leeners, Stiller, Block, Torres, Imthurn, & Rath (2009). "Consequences of childhood sexual abuse experiences on dental care". Journal of Psychosomatic Research. 62 (5): 581–588. doi:10.1016/j.jpsychores.2006.11.009. PMID 17467413.CS1 maint: multiple names: authors list (link)
- Monahan & Forgash (2000). "Enhancing the health care experiences of adult female survivors of childhood sexual abuse". Women and Health. 30 (4): 27–41. doi:10.1300/J013v30n04_03. PMID 10983608.
- Sickel, Noll, Moore, Putnam, & Trickett (2002). "The long-term physical health and healthcare utilization of women who were sexually abused as children". Journal of Health Psychology. 7 (5): 583–597. doi:10.1177/1359105302007005677. PMID 22113143.CS1 maint: multiple names: authors list (link)
- Stalker, Russell, Teram, & Schachter (2005). "Providing dental care to survivors of childhood sexual abuse: treatment considerations for the practitioner". Journal of the American Dental Association. 136 (9): 1277–1281. doi:10.14219/jada.archive.2005.0344. PMID 16196233.CS1 maint: multiple names: authors list (link)
- Carlson, Maciol, & Schneider (2006). "Sibling incest: reports from forty-one survivors". Journal of Child Sexual Abuse: Research, Treatment, & Program Innovations for Victims, Survivors, & Offenders. 15 (4): 19–34. doi:10.1300/j070v15n04_02. PMID 17200052.CS1 maint: multiple names: authors list (link)
- Tidefores, Arvidsson, Ingevaldson, & Larsson (2010). "Sibling incest: a literature review and a clinical study". Journal of Sexual Aggression. 16 (3): 347–360. doi:10.1080/13552600903511667.CS1 maint: multiple names: authors list (link)
- Tremblay, Hébert, & Piché (1999). "Coping strategies and social support as mediators of consequences in child sexual abuse victims". Child Abuse & Neglect. 23 (9): 929–945. doi:10.1016/S0145-2134(99)00056-3. PMID 10505906.CS1 maint: multiple names: authors list (link)
- Welfare (2008). "How qualitative research can inform clinical interventions in families recovering from sibling sexual abuse". Australian & New Zealand Journal of Family Therapy. 29 (3): 139–147. doi:10.1375/anft.29.3.139.
- Finkelhor, Turner, & Ormrod (2006). "Kid's stuff: the nature and impact of peer and sibling violence". Child Abuse & Neglect. 30 (12): 1401–1421. doi:10.1016/j.chiabu.2006.06.006. PMID 17118448.CS1 maint: multiple names: authors list (link)
- Duncan, Duncan, & Hops (1996). "The role of parents and older siblings in predicting adolescent substance use: modeling development via structural equation latent growth methodology". Journal of Family Psychology. 10 (2): 158–172. doi:10.1037/0893-318.104.22.168.CS1 maint: multiple names: authors list (link)
- Caspi, Jonathan (2012). Sibling Aggression: Assessment and Treatment. Springer Publishing Company. pp. 213–217.
- Kennedy & Kramer (2008). "Improving emotion regulation and sibling relationship quality: The More Fun with Sisters and Brothers Program". Family Relations. 57 (5): 568–579. doi:10.1111/j.1741-3729.2008.00523.x.
- Kramer & Radey (1997). "Improving sibling relationships among young children: a social skills training model". Family Relations. 46 (3): 237–246. doi:10.2307/585121. JSTOR 585121.
- Tiedemann & Johnston (1992). "Evaluation of a parent training program to promote sharing between young siblings". Behavior Therapy. 23 (2): 299–318. doi:10.1016/S0005-7894(05)80387-9.
- U.S. Surgeon General (2001). Youth violence: a report of the Surgeon General. Washington, DC: Department of Health and Human Services.
- Caspi (Ed.) (2011). Sibling development: implications for mental health practitioners. New York: Springer Publishing.CS1 maint: extra text: authors list (link)
- Caffaro, John (2014). Sibling Abuse Trauma: Assessment and Intervention Strategies for Children, Families, and Adults. pp. 164–194.
- IMDB page
- Hitchens, Peter (2000). The Abolition of Britain. Quartet Books; New edition (1 April 2000). ISBN 978-0-7043-8140-7.
- "1990-2004: "Brando's Affair", Family drama and Death of Marlon. Part 1". 2013-02-20.
- "Guy Georges".
- "Hugh Jackman: "My wife and my kids are the real centre of my world"". Archived from the original on 2012-12-07.
- "Hugh Jackman : Fils abandonné et frère tyrannisé, il est devenu Wolverine !".
- Gilbey, Ryan (2011-10-06). "Hugh Jackman: 'What are ya – a poof?'". The Guardian.
- "Bullied Jackman wanted to 'kill' brother". 2009-04-06.
- Wiehe, Vernon R. What Parents Need to Know About Sibling Abuse: Breaking the Cycle of Violence (2002)
- Caffaro., J. & Conn-Caffaro, A. (1998). Sibling Abuse Trauma, NY: Routledge.
- Caffaro, J. & Conn-Caffaro, A. (2005). Treating Sibling Abuse Families. Aggression & Violent Behavior, 10(5), 604-623.
- Caffaro, J. (2013). Sibling abuse trauma. 2nd Edition. NY: Routledge.
- Caspi, J. (2012). Sibling Aggression: Assessment and Treatment. NY: Springer Publishing