The Worst Ages for Kids to Experience Divorce

A group of children enjoying playtime indoors, displaying joyful expressions — Photo: Olesia Bilkei / Shutterstock

A child’s brain goes through two major building phases, and psychoanalyst Erica Komisar says a divorce during either one can leave lasting scars.

Quick Take

Psychoanalyst Erica Komisar says divorce hits hardest before age 3 and again between roughly ages 11 and 14.
She points to ages 6 to 11 as the calmer, more stable window for families facing separation.
Her claim centers on brain attachment growth in toddlers and the brain’s rewiring process in early teens.
Broader child-development research is split, with some studies naming conflict and caregiving quality as bigger factors than age alone.

Why Komisar Zeroes In On Two Specific Windows

Komisar, a practicing psychoanalyst and author, argues that timing matters as much as how parents handle a divorce. She tells parents to wait until a child turns 3, if at all possible, unless abuse is happening in the home. Her reasoning rests on brain science. By age 3, roughly 85 percent of a child’s right brain, the half that handles emotional bonding, has already formed.

That early window is when babies learn whether the world is safe and whether caregivers will show up. Komisar says splitting a household during this stretch can disrupt the basic trust a child needs for secure attachment later in life. She stops short of saying every early divorce causes permanent damage. Instead, she frames it as a risk factor parents should weigh seriously before acting.

The Second Danger Zone: Early Adolescence

The second risky window, Komisar says, falls between ages 11 and 14. This is when the brain undergoes a major pruning phase, cutting unused connections while strengthening others tied to identity and independence. Layer a divorce on top of that, she argues, and kids often get stuck acting as emotional caretakers for a struggling parent instead of focusing on their own growth.

That caretaking role, sometimes called parentification, shows up again and again in interviews Komisar has given on the topic. She describes young teens absorbing adult stress at an age when they’re already wrestling with hormones, social pressure, and a shifting sense of self. Her advice to parents isn’t to avoid divorce forever. It’s to recognize that some ages carry heavier emotional costs than others.

Where Komisar Says Families Find More Stability

Middle childhood, roughly ages 6 to 11, gets singled out by Komisar as a comparatively safer stretch. Kids in that range have usually built a stronger sense of identity and more coping skills than toddlers, yet they haven’t hit the turbulence of early adolescence. She describes it as the window where children can process a divorce with the most resilience, though she stresses it’s never painless.

Komisar also pushes back on the idea that custody arrangements should aim for a mathematically even split. She has argued that courts and parents often treat children “like a possession that can be evenly split,” when the real question should be what arrangement actually serves the child’s development at that specific age. It’s a practical point that cuts through a lot of courtroom formula-thinking.

What The Wider Research Says About Timing

Komisar’s framework lines up with a chunk of attachment research showing infancy and early childhood as sensitive periods for bonding. But the broader academic record isn’t unanimous. Some reviews find that divorce during adolescence or even late childhood carries its own distinct risks, particularly for romantic relationships in adulthood. Other government-backed summaries note that conflict intensity and caregiving quality often predict outcomes better than a child’s exact age at the time.

One Canadian justice department review found teenagers can experience a drop in self-esteem and start questioning their own ability to sustain future relationships, even though they’re less dependent on the household day to day. That echoes Komisar’s early-adolescence warning while adding nuance. The takeaway for parents isn’t a single magic age to avoid. It’s that attachment security and reducing household conflict matter just as much as the calendar.

The Practical Bottom Line For Parents Weighing This

Komisar’s message boils down to something conservative, family-focused readers will recognize instantly: timing and stability aren’t side issues in divorce, they’re central ones. She isn’t arguing couples should stay miserable forever. She’s arguing that if parents have any choice in timing, they should factor in what a child’s brain is doing at that exact moment, not just what’s convenient for the adults.