APA Citation
Bank, S., & Kahn, M. (1997). The Sibling Bond. Basic Books.
Summary
"The Sibling Bond" is the foundational text on sibling relationships, examining how brother-sister dynamics shaped in childhood persist throughout life. Bank and Kahn demonstrate that sibling relationships are unique—longer-lasting than any other family relationship, formed before either party has choice, and carrying patterns established when both were children without power. The book analyzes sibling loyalty, rivalry, abuse, protection, and estrangement, showing how these early relationships create templates for later connections. For understanding narcissistic family dynamics, this research illuminates how the golden child and scapegoat roles create lifelong sibling wounds, why sibling abuse is often overlooked, and how narcissistic siblings continue patterns of domination and manipulation into adulthood.
Why This Matters for Survivors
For survivors navigating relationships with narcissistic siblings, Bank and Kahn's work validates that sibling relationships carry unique weight and complexity. The roles assigned in childhood—golden child, scapegoat, lost child—don't simply disappear when you grow up. Understanding the sibling bond's particular features helps explain why narcissistic sibling relationships are so difficult to address: you can't divorce a sibling, family pressure maintains contact, and childhood patterns persist despite adult attempts to change them.
What This Research Found
The unique nature of sibling bonds. Bank and Kahn established that sibling relationships have distinct features that differentiate them from all other human connections. They typically last longer than any other relationship (often 60+ years); they begin before either party can consent or resist; they’re formed between developing children without power or fully formed personalities; and they carry expectations and obligations that persist regardless of affection. These features make sibling relationships uniquely influential in shaping how people relate to peers throughout life.
Childhood roles that persist. The book demonstrates how roles assigned in childhood—often reflecting parental needs more than children’s natures—persist into adulthood. The golden child continues to expect admiration; the scapegoat continues to expect blame; the lost child continues to feel invisible. Family gatherings trigger regression to these roles even when adult siblings have developed significantly outside the family context. The patterns are deeply internalized, not merely situational responses.
Sibling abuse as hidden trauma. Bank and Kahn documented that serious abuse between siblings is common yet minimized. Parents often dismiss aggression as “sibling rivalry” or “normal fighting.” This normalization provides cover for psychological and physical abuse that would be recognized as such between non-siblings. The researchers found that sibling abuse often goes unrecognized even by victims, who internalize the “just siblings fighting” narrative and don’t identify their experience as abusive until adulthood.
The sibling bond as template. Early sibling relationships create templates for later peer connections. How you learned to compete, cooperate, share attention, and manage conflict with siblings shapes how you approach these dynamics with friends, coworkers, and partners. Bank and Kahn show how sibling patterns—healthy or dysfunctional—echo throughout relational life.
Why This Matters for Survivors
Understanding why sibling relationships are so complicated. If you have a narcissistic sibling, Bank and Kahn’s work helps explain why the relationship is so difficult to navigate. The sibling bond carries features—longevity, involuntary formation, childhood patterns, family expectations—that make it uniquely challenging. You can’t simply “divorce” a sibling the way you might end a friendship; family structure continues to create contact points and pressure even when the relationship is toxic.
Validating sibling abuse as real trauma. If you experienced abuse from a sibling that was dismissed as “rivalry” or “normal,” Bank and Kahn’s research validates that sibling abuse is real and damaging. The minimization you experienced from parents and others reflects a cultural blindspot, not an accurate assessment of your experience. Understanding that sibling abuse is a recognized phenomenon can help you take your own experience seriously rather than continuing to minimize it.
Why childhood roles persist despite adult change. You may have achieved significant success and personal growth, yet family gatherings still reduce you to the scapegoat role you occupied at age 10. Bank and Kahn explain why: sibling relationships are deeply patterned from early experience, and contact with siblings triggers these patterns regardless of intervening change. This isn’t your failure to “move past” childhood; it’s the nature of sibling bonds.
The particular difficulty of sibling estrangement. Going no-contact with parents, while painful, has a defined endpoint—they will die, and they occupy a hierarchical position that makes distance more socially acceptable. Siblings may live as long as you do, occupy peer position that makes estrangement seem more extreme, and create ongoing contact requirements (shared events, parent care). Bank and Kahn’s work helps normalize the difficulty of managing or ending toxic sibling relationships.
Clinical Implications
Assess sibling dynamics specifically. Clinical assessments often focus on parent-child relationships while underexploring sibling dynamics. Bank and Kahn’s research suggests sibling relationships deserve specific attention: What roles did siblings occupy? How did sibling conflict get handled? What was the quality of sibling relationships? These questions can reveal significant influences on adult relational patterns.
Take sibling abuse seriously. Clients may describe sibling experiences in minimizing language learned from parents: “We just fought a lot,” “She was always kind of mean to me.” Bank and Kahn’s research supports exploring whether these descriptions actually reflect abuse that was normalized. Helping clients recognize sibling abuse as real can be an important therapeutic step.
Understand sibling relationships in family therapy. When working with family systems, sibling dynamics deserve attention beyond the identified patient’s relationship with parents. Golden child and scapegoat dynamics, sibling abuse, protective sibling relationships, and estrangement patterns all affect family functioning. Bank and Kahn provide framework for understanding these dynamics.
Address ongoing sibling contact. Adult clients often face ongoing sibling contact through family events, shared responsibilities for aging parents, or family pressure to maintain relationships. Clinicians can help clients develop strategies for managing these contacts while protecting their wellbeing—recognizing that full estrangement may not be possible or desirable even when the relationship is difficult.
Explore templates for peer relationships. How clients relate to peers, coworkers, and partners often echoes sibling patterns. Exploring these connections can illuminate how early sibling experience shaped adult relational styles, whether around competition, sharing attention, managing conflict, or seeking approval.
Broader Implications
The Overlooked Relationship
Psychology historically emphasized parent-child attachment while treating sibling relationships as secondary. Bank and Kahn’s work challenged this hierarchy, demonstrating that siblings deserve attention as primary relationships with unique features and lasting impact. This has influenced subsequent research and clinical practice.
Sibling Abuse Recognition
The normalization of sibling aggression as “rivalry” has left many abuse victims without recognition or support. Bank and Kahn’s work contributed to growing acknowledgment that sibling abuse is real, common, and damaging—not a normal part of growing up that children should simply endure.
Family Systems Understanding
Understanding sibling dynamics enriches family systems approaches. How roles get distributed among siblings, how parents triangulate through sibling relationships, and how sibling coalitions form all affect family functioning. Bank and Kahn provide concepts for understanding these dynamics.
Aging Families
As parents age and siblings must coordinate care, childhood dynamics often resurface with new intensity. Golden children may expect to make decisions; scapegoats may expect to be excluded; inheritance disputes may reflect decades-old grievances. Bank and Kahn’s work helps understand these late-life sibling conflicts.
Only Children and Sibling Absence
The significance Bank and Kahn attribute to sibling bonds has implications for understanding only children, who develop without this formative relationship. Their peer relationship templates come from different sources, which may have its own implications for adult relating.
Cultural Variations
Sibling relationships carry different weights in different cultures. Bank and Kahn primarily analyzed Western sibling dynamics; sibling bonds may function differently where extended family structures, birth order hierarchy, or collective values shape sibling expectations differently.
Limitations and Considerations
Cultural specificity. Bank and Kahn primarily studied Western sibling relationships. Sibling dynamics in cultures with different family structures, birth order expectations, or collective vs. individual orientations may function differently. The framework needs cultural adaptation.
Historical context. Family size and structure have changed since the book’s publication. Smaller families, blended families, and diverse family forms create sibling configurations different from those Bank and Kahn primarily studied. Contemporary sibling research has expanded the framework.
Individual variation. While the book identifies patterns, significant individual variation exists. Not all golden children become narcissistic; not all scapegoats carry lasting wounds. The research describes tendencies, not determinisms.
Limited focus on adult interventions. The book is stronger on understanding sibling dynamics than on interventions for changing them in adulthood. Clinicians may need to draw on other resources for treatment approaches to adult sibling difficulties.
How This Research Is Used in the Book
This research is cited in Chapter 20: The Field Guide to introduce discussion of narcissistic siblings:
“Sibling relationships with narcissistic individuals present distinct challenges. Unlike parental relationships, siblings occupy a peer position, yet dynamics begin in childhood when roles are assigned before either party can resist. The relationship typically lasts a lifetime, cannot be fully severed without broader family consequences, and carries patterns rooted in childhood competition for parental attention.”
The citation supports the book’s practical guidance for managing narcissistic sibling relationships, grounding the discussion in understanding of what makes sibling bonds uniquely complicated.
Historical Context
“The Sibling Bond” was first published in 1982 and updated in 1997. When Bank and Kahn began their work, psychological research focused primarily on parent-child attachment. Sibling relationships were considered secondary—interesting but not fundamental to development. This reflected both theoretical emphasis on vertical (parent-child) over horizontal (peer) relationships and clinical focus on attachment to primary caregivers.
Bank and Kahn challenged this hierarchy by demonstrating that sibling relationships have unique features that parent-child frameworks don’t capture: the peer nature, the lifelong duration, the involuntary formation in childhood, the daily intimacy during formative years. Their work established sibling psychology as a legitimate field with its own concepts, patterns, and clinical implications.
The book also contributed to recognition of sibling abuse as a serious issue. Previously dismissed as normal rivalry, sibling aggression came to be understood as potentially abusive and damaging. This shift has influenced how parents, teachers, and clinicians respond to sibling conflict—though normalization of sibling abuse remains common.
Subsequent researchers have built on Bank and Kahn’s foundation, exploring sibling relationships in more diverse family configurations, across cultures, and through the lifespan. The original work remains foundational for understanding sibling bonds and their lasting influence.
Further Reading
- Caffaro, J.V. (2014). Sibling Abuse Trauma: Assessment and Intervention Strategies for Children, Families, and Adults (2nd ed.). Routledge.
- Kiselica, M.S., & Morrill-Richards, M. (2007). Sibling maltreatment: The forgotten abuse. Journal of Counseling & Development, 85(2), 148-160.
- Dunn, J. (2015). Siblings. In R.M. Lerner (Ed.), Handbook of Child Psychology and Developmental Science (7th ed.). Wiley.
- Whiteman, S.D., McHale, S.M., & Soli, A. (2011). Theoretical perspectives on sibling relationships. Journal of Family Theory & Review, 3(2), 124-139.
- Cicirelli, V.G. (1995). Sibling Relationships Across the Life Span. Springer.
About the Author
Stephen P. Bank, PhD was a clinical psychologist and professor at Wesleyan University who specialized in family therapy and sibling relationships. His clinical work with families led him to recognize that sibling dynamics were underexplored in psychological literature.
Michael D. Kahn, PhD is a clinical psychologist who has practiced family therapy for over four decades. His work focuses on the intersection of individual psychology and family systems.
Together, Bank and Kahn pioneered serious academic study of sibling relationships, previously considered less significant than parent-child dynamics. Their 1982 first edition of "The Sibling Bond" established sibling psychology as a legitimate field of study.
Historical Context
First published in 1982 and updated in 1997, "The Sibling Bond" appeared when psychological research focused primarily on parent-child relationships. Siblings were considered peripheral to development compared to attachment to parents. Bank and Kahn challenged this hierarchy, demonstrating that sibling relationships have unique features and lasting impact that couldn't be reduced to parent-child dynamics. The book helped establish sibling psychology as a distinct field of study with clinical implications.
Frequently Asked Questions
Several features distinguish sibling bonds: they typically last longer than any other relationship (siblings often outlive parents and meet before spouses); they begin before either party can consent or resist; they're formed between children without power or fully developed personalities; they involve daily contact during formative years; and they carry family expectations that don't apply to friendships. These features mean sibling relationships have a particular intensity and persistence that shapes how we relate to peers throughout life.
The golden child, scapegoat, lost child, and mascot roles established in narcissistic families don't automatically dissolve when children grow up. Bank and Kahn show how sibling interactions continue to invoke these patterns: the golden child expects deference, the scapegoat expects criticism, each sibling relates to the others according to childhood templates. Family gatherings often trigger regression to these roles even when siblings have changed significantly in their adult lives outside the family.
Parents often dismiss sibling aggression as 'sibling rivalry' or normal conflict. Bank and Kahn demonstrate that serious psychological and physical abuse between siblings is common but minimized. The normalization of sibling conflict provides cover for abuse that would be recognized as such between non-siblings. Additionally, parents may be invested in not seeing abuse—recognizing it would require intervention they're unable or unwilling to provide. The 'forgotten abuse' between siblings affects millions whose trauma goes unacknowledged.
Adult narcissistic siblings may continue childhood patterns of domination, competition, manipulation, and devaluation. Common behaviors include: competing to be the 'favourite' with aging parents, controlling family narratives and information flow, sabotaging siblings' achievements or relationships, using family events as arenas for one-upmanship, manipulating inheritance and care decisions, and maintaining golden child/scapegoat dynamics even when parents are deceased. The patterns persist because they're deeply internalized, not just situational responses.
Bank and Kahn's work suggests it depends on the severity of the narcissism and your own boundaries. Limited contact may be possible if you can: maintain boundaries despite family pressure; not take their behaviour personally; accept that they won't change; and manage your expectations. Complete estrangement may be necessary if contact causes harm and boundaries cannot be maintained. The sibling bond makes estrangement uniquely difficult—there's family pressure, shared history, and sometimes practical necessity (caring for aging parents).
Several factors: siblings may live as long as you do (you can't wait for them to die as with elderly parents); family events often require presence with siblings even if you've cut off parents; shared sibling responsibilities like parent care may force contact; other family members may pressure reconciliation more strongly for siblings ('They're your brother/sister'); and the sibling relationship carries expectations of peer equality that make estrangement seem more extreme than cutting off a 'bad parent.'
The golden child often continues to expect admiration and deference; the scapegoat often continues to expect criticism and blame. Even when the scapegoat has achieved success and the golden child has failed, family narratives often persist. Family gatherings can trigger old patterns regardless of current reality. The scapegoat may feel invisible while the golden child receives attention; the golden child may feel threatened by the scapegoat's success. These dynamics often intensify around inheritance and parental care decisions.
Bank and Kahn's research suggests that parents significantly shape sibling dynamics through how they handle conflict, comparison, and favoritism. Avoiding rigid roles (golden child, scapegoat), taking sibling conflict seriously rather than dismissing it as 'rivalry,' not comparing children, and allowing each child individual relationship with parents can support healthier sibling bonds. The patterns you create in childhood may persist throughout your children's lives, so early investment in sibling health has long-term returns.