Psychology says people who trust their siblings more than their parents may be seeking a different kind of emotional safety

For some people, the first person they call after a breakup, embarrassing mistake, family argument or major life decision is not a parent. It is their brother or sister. They may love their parents deeply, respect them and depend on them, yet still feel that a sibling is easier to talk to, confide in and trust. Psychology suggests that this does not necessarily mean they are closer to their siblings in every way. Instead, the sibling relationship can provide a particular kind of emotional safety built through shared experiences, similar life stages and a sense of being understood without explanation.

Psychology Says Siblings Can Become Emotional Confidants

Sibling relationships are unusual because they combine familiarity, shared history and relative equality. Brothers and sisters may have witnessed the same family conflicts, childhood experiences, parental expectations and major life transitions.

Research on sibling relationships describes siblings as companions, confidants and role models during childhood and as sources of support throughout adulthood. This can create what psychologists call perceived emotional support. A person may believe that a sibling will understand the situation because they were there too.


For example, someone who does not want to tell a parent about a career failure may immediately tell their sister because she already understands the family's expectations, previous arguments and the emotional pressure surrounding the decision.


The trust is therefore not necessarily about choosing one family member over another. It can be about choosing the person who feels most psychologically accessible in that particular moment.

Attachment Theory May Explain Why Siblings Can Feel Safer

The work of John Bowlby and Mary Ainsworth provides another useful framework.

Attachment Theory proposes that close relationships can become sources of security and comfort. A secure relationship allows a person to seek reassurance when distressed and return to everyday life with greater confidence.

Although attachment theory originally focused heavily on caregiver-child relationships, later research has examined how other close relationships function as important sources of emotional security.

This helps explain why an older sister, younger brother or twin can become the person someone contacts during a crisis. The sibling may not have the authority of a parent, but that can actually make disclosure easier. There is less fear of being judged, punished or lectured.

Shared Childhood Can Create A Powerful Sense Of “You Get Me”

One of the strongest advantages siblings have is shared autobiographical experience.

Two siblings may remember the same family holiday, the same school years, the same difficult relative or the same parental argument. This creates a common psychological history that friends or partners may not completely possess.

Research on sibling relationships has found that emotional exchanges and warmth can become particularly important as siblings move from adolescence into emerging adulthood.

This can make sibling conversations feel remarkably efficient. A person might tell their brother, “You know what happened with Dad,” and not need to explain the entire history. That reduced need for explanation can itself make communication feel safer and more intimate.

Bowen’s Family Systems Theory Explains The Family Dynamic

Murray Bowen's Family Systems Theory views the family as an interconnected emotional system rather than a collection of completely independent relationships. His theory includes concepts such as emotional triangles, differentiation of self and sibling position. This is particularly relevant when someone trusts a sibling more than a parent.

Imagine two siblings who frequently discuss tensions at home. One may become the other's emotional ally or sounding board. In Bowen's framework, family anxiety can move through relationships and sometimes involve three-person patterns, or triangles.

That does not mean siblings who confide in each other are dysfunctional. In fact, sibling closeness can be protective. Research has found that positive sibling relationships can buffer children against some effects of stressful life events, even when the quality of the mother-child relationship is taken into account.

Sibling Support Can Sometimes Compensate For Lower Parental Support

There is also evidence that sibling support can partly compensate when support from parents is perceived as insufficient.

A study of emerging adults found that sibling support was associated with lower loneliness and depression and higher self-esteem and life satisfaction. It also found evidence that sibling support could compensate for lower parental and peer support in some areas.

This does not mean that every person who trusts a sibling more has experienced poor parenting. Personalities, age differences, family roles, culture and individual experiences can all influence whom someone feels comfortable approaching.

Research involving 428 families also found that sibling relationship quality and perceived parental support can influence each other over adolescence, suggesting that these relationships do not operate independently.

Trusting A Sibling More Does Not Mean Loving Parents Less

The most important psychological distinction is between emotional preference in a particular situation and overall attachment. Someone might trust a sibling with romantic problems but trust a parent with financial decisions. Another person may rely on a sibling for emotional reassurance while depending on parents for practical or long-term support.

Recent research has also linked stronger sibling relationships with aspects of later wellbeing, although the long-term effects are not universal across every outcome.


So when someone says, “I tell my sister everything, but I can't tell my parents,” psychology does not automatically interpret that as rejection of the parents. Sometimes it simply means the sibling has become the person who feels least judgmental, most familiar and easiest to understand.

FAQs

Why do some people trust their siblings more than their parents?
Shared childhood experiences, similar life stages, emotional closeness and lower perceived judgment can make siblings easier to confide in. It does not necessarily indicate a poor parent-child relationship.

Does trusting a sibling more mean you are closer to them?
Not necessarily. Different relationships can fulfill different psychological functions. Someone may seek emotional support from a sibling while relying on parents for practical, financial or life guidance.