How your siblings can make you happier

When I was young, I didn’t get along well with my older sister. Though I looked up to her and longed for her positive attention, she didn’t seem to want me around, especially when her friends came over.

By Jill Suttie

When I was young, I didn’t get along well with my older sister. Though I looked up to her and longed for her positive attention, she didn’t seem to want me around, especially when her friends came over.

That’s weird to recall, as we are currently very close—a blessing, especially now that our parents are long gone. Our relationship has evolved over my lifetime into something very different than how it began, exerting a profound influence on both of us.

Is that unusual? Though parent/child relationships have received the lion’s share of attention in psychology research, researchers are starting to discover the many ways siblings affect us, too—for good and for bad. By paying attention to the quality of our sibling relationships, we might make our own discoveries about ourselves and our families.

Experts say that around 80 per cent of Americans have at least one sibling. For many, those are the longest-lasting relationships in their lives, extending well beyond the parent/child relationship.

“Parents don’t stay with you your whole life, your romantic partners come and go (and you don’t meet them until later in life), friends come and go, but siblings are always there through the lifespan,” says researcher Susan McHale of Penn State University, who studies sibling relationships.

Because of that long connection, she adds, siblings matter a lot for our personal growth and well-being. “Throughout their lifespans, people who have close sibling relationships have better mental health, better psychological health, and better social relationships, generally speaking.”

Research confirms that if siblings have hostile or conflict-ed relationships when young, it can increase their risks of suffering anxiety, depressive symptoms, and even risky or antisocial behavior later in adolescence. On the other hand, positive sibling relationships can be protective, with warm relationships tied to better social relationships during the teen years. For Laurie Kramer of Northeastern University, the reason brothers and sisters matter so much is that those relationships are practice grounds for other relationships in life.

“We learn a lot by interacting with people who we spend a lot of time with, like how to share, care for another person, be considerate of another person’s needs,” she says. “But we also learn how to manage conflict and other social-emotional skills, which we can apply to other relationships.”

Whether our siblings are warm and kind or more combative and bullying, siblings are watching each other carefully, she adds, absorbing information “like sponges” on how to navigate the world.

“They’re picking up on all of this and creating their own identities, many times in response to how they perceive their siblings—or, if they don’t want to be the same, in reaction to that,” she says.

What strains creates
The effects of sibling relationships depend on many factors. For example, when parents show preferential treatment for one sibling over another, or if children feel their parents are not treating them fairly, that generally increases sibling conflict and creates problems down the road.

“When children perceive that parents are being unjust, that’s when we see all the significant correlations with poor outcomes for children, like poor sibling relationships, poor parent/child relationships, and poor appraisals of their own self-worth,” says Kramer.

On the other hand, siblings can understand differential treatment, if there’s a good explanation for it—like a sibling has special needs or an older child has later curfews.

Even when favoritism is toxic, says McHale, siblings can heal their relationship by acknowledging that it’s happening and how unfair it is.

“They can be protective of one another, provided that they both understand what’s going on, it’s recognized, and the favoured child can be supportive of the less favoured child to help make up for parents’ behaviour,” she says.

Marital conflict in a family, too, can create less warmth and more conflict between siblings. That may have played a role in my relationship with my own sister, as my father’s alcoholism was a source of tension in my parents’ relationship.

McHale says that gender can play a role; generally, sister/sister pairs or sister/brother pairs tend to be closer. That may be because girls and women are socialized to be more emotionally expressive, which is tied to less conflict. In adolescence, having a sibling of the opposite sex can be an advantage, if you’re heterosexual.

“We’ve found that kids with other-sex siblings are more romantically competent,” says McHale. “Unfortunately, we don’t have enough transgender or non-binary kids in our studies to be able to know how these things work in a broader gender context.”

Though gender and age differences affect sibling relationships, Kramer says that the factor most predictive of positive sibling relationships is if an older sibling learns how to play well with other children before their sibling is born.

“It really does come down to a set of social and emotional competencies,” she says. “Even young kids can learn a lot of these skills and apply them in their relationship with their siblings later on.”

Shifting in later life
As conflicted siblings enter young adulthood, their relationships often become less intense but warmer than when they were younger.

Midlife and older adults rate relationships as warmer, less conflicted, and less marred by parental favoritism. Later in life, sister-sister siblings seem to have the closest relationships are closer.

McHale suggests that “Given your shared history, siblings understand you like no one else.” “Family routines, family rituals, memories, the ways things work, the little jokes and private understandings—you just don’t have
that with other people, not even a long-term spouse.”

Still, conflicts can arise between siblings in adulthood, says Kramer, especially as life gets complicated by work obligations, raising families, parent caregiving, or a parent’s death. If old familial wounds (like perceived favoritism) get revisited, it can lead to poorer relationships and increased depression.

Though research on siblings is expanding, much of it is correlational—meaning, it’s unclear whether poor sibling relationships are the cause of less well-being or vice versa. It’s possible, for example, that being depressed sours your sibling relationships rather than the reverse. Yet warmer sibling relationships in older adults do seem to help stave off loneliness and depression, and siblings often help each other out when times are tough. This suggests they remain important and are worth nurturing.

Improving at any age
It’s best to encourage warm sibling relationships from the get-go. But some parents may resist, thinking they’ll just work it out on their own. McHale disagrees with that approach. “You hear that a lot—that it’s natural for siblings to fight. But it’s not natural,” she says.

“In certain cultures, siblings have prescribed roles, where the elder brother or eldest sister is the caregiver, and fighting is not common, expected, or tolerated,” she says.

Kramer thinks this attitude is a mistake. “We don’t expect everything to be positive for sure, but neither should parents expect siblings to fight a lot,” she says. “That’s not really preparing kids to start a relationship with someone who’s going to be really important in their life.”

She and Kramer both believe that helping siblings to understand and manage their emotions, learn perspective taking, and find better ways to play together are key for developing positive sibling relationships. To that end, Kramer has developed an online program called More Fun with Sisters and Brothers, which helps parents coach their four- to eight-year-old children how to get along and get through conflicts without hurt feelings.

It can be tough if there are unresolved conflicts from childhood, says Kramer. Adult siblings will also need to practice many of the same skills as young kids.

“Understanding why you’re upset, expressing emotion, understanding another person’s perspective, trying to come up with a compromise or a way to solve problems—these are just core social skills,” says McHale. “They are useful in fostering better relationships at any point in life.”

Are those efforts worth it? 
Kramer says yes. “I truly believe that we can work to improve relationships at any point even if they don’t spend time together or have disagreements. But it’s good for them to like each other enough to help out in a pinch.”

This article originally appeared on Greater Good. Read more at greatergood.berkeley.edu.

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