Written for the parent · birth to three

A baby cannot be told. A baby can be kept on schedule.

Under three there is no conversation to have and no explanation that lands. What a baby registers is routine, the person who answers, and tension in the room — including tension they are far too young to name and not too young to feel.

A clock face drawn as a routine A thick ring almost closed, with three gold markers at regular intervals and a small clock at the center, standing for a predictable daily schedule.

This page is written for the parent, about the child. It is not written to be read by the child it describes, and we have kept the two kinds of page apart on purpose. Pages written directly to children start at age ten and are labeled as theirs — they are here, and you are welcome to read them.

The short version5 points · tap one to jump to it
  1. What is actually different about this age — There is no memory of before.
  2. Frequent and short beats rare and long — This is the one place where the right schedule for a baby is close to the opposite of the right schedule for a teenager.
  3. The handover is the whole ballgame at this age — Almost every practical problem under three shows up at the same moment: the exchange.
  4. If the court wants to hear from your child — Depending on the state and the judge, a child may be interviewed by a guardian ad litem, a custody evaluator, a family-court counselor, or in some places the judge directly, usually in chambers rather than a courtroom.
  5. What we are not going to claim — Nobody can tell you what your particular eighteen-month-old will be like at fifteen because of this.
In this subject 5

What is actually different about this age

Two things, and everything practical follows from them.

There is no memory of before. A child under three has no narrative of the family that existed. They are not losing a story; they are living in whatever arrangement is current. This is the one age at which the divorce itself is genuinely not the event. The event is disruption to routine.

Out of sight really is out of mind — except for tension. The Arizona court guide puts it plainly: babies cannot remember things they experienced over time, which is why frequent contact with each parent matters more at this age than long stretches with either. But it also notes that babies do have what it calls emotional memories of conflict, which can have long-term negative effects.

Babies do have “emotional memories” of conflict that can have long-term negative effects, so parents shouldn’t argue when children, even babies, can hear the arguing.Planning for Parenting Time: Arizona’s Guide for Parents Living Apart, Arizona Supreme Court, © 2009

That single sentence carries more practical weight than anything else on this page. A one-year-old cannot follow an argument and can absolutely tell that one is happening.

Frequent and short beats rare and long

This is the one place where the right schedule for a baby is close to the opposite of the right schedule for a teenager. Because a baby cannot hold a parent in mind across a long gap, more frequent, shorter contact does more for attachment than fewer, longer blocks — and that inverts as the child grows. The guide is explicit that as a child matures, longer periods with fewer exchanges may be preferred.

Practically, that means a plan built for a two-year-old is a plan you should expect to renegotiate, and building the expectation of revision into it from the start is easier than relitigating it at five.

What the evidence supports

  • Keeping the sleep and feeding schedule identical in both homes, even when the two adults agree on nothing else
  • Frequent contact with both parents rather than long gaps
  • Both parents sharing what they are doing — how the child slept, ate, what upset them — as information, not as scorekeeping
  • A comfort object that travels, and travels back
  • Silence at handover if the alternative is an argument
  • Planning around breastfeeding rather than around fairness — expressed milk sent with the baby is a normal solution, not a concession
  • All as described in Planning for Parenting Time: Arizona’s Guide for Parents Living Apart, Arizona Supreme Court, © 2009

What does not work, or is not the point

  • Explaining. There is nobody there to explain it to yet
  • Reading distress at handover as evidence about the other parent. The guide is direct that resistance to exchanges is normal at this age and does not mean the other parent is bad or that the child does not want to go. Most children settle shortly after
  • Arguing on the doorstep because the baby will not remember it
  • Splitting time down the middle for the sake of the number when it cuts across a feeding or sleeping schedule
  • Assuming a baby is too young to be affected. They are too young to be told. Not the same thing

The handover is the whole ballgame at this age

Almost every practical problem under three shows up at the same moment: the exchange. The guide’s advice is unglamorous and it is the advice — predictable schedule, no conflict in front of the child, visible support for the child’s relationship with the other parent. Where two adults cannot manage a civil thirty seconds, the answer is to take the thirty seconds out of the plan: a third person, a neutral place, a school or daycare handover where the two of you never overlap.

Handing a baby over while tense, every week, for two years, is a larger exposure than almost anything else in the arrangement.

If the court wants to hear from your child

Depending on the state and the judge, a child may be interviewed by a guardian ad litem, a custody evaluator, a family-court counselor, or in some places the judge directly, usually in chambers rather than a courtroom. What these people do varies enormously by state, and the title can mean different things in two courts a county apart — we set out who each of them is, what they can and cannot do, and who pays for them on who speaks for your child.

What is worth knowing is the shape of it. Someone whose job is to form a view about what arrangement is workable will spend time with your child, often more than once, often at home, and will usually ask about ordinary things — school, meals, bedtime, who takes them where — rather than asking them to pick.

We will not tell you how to prepare a child for that conversation, and you should distrust any page that does. Preparing a child to say a particular thing is coaching. It is usually obvious to the person doing the interview, it damages your position when it is noticed, and it puts a child in the position of performing for an adult about their own family. The only honest preparation is telling them who is coming, that it is not a test, that there is no right answer, and that nothing they say decides anything on its own.

Whether a child’s stated preference carries any weight, and at what age, is a question of state law rather than psychology. We cover it state by state — see at what age a child can choose for where your state sits.

At this age a child will not be interviewed. What happens instead is that an evaluator may observe you with the child, which is a different thing and is not a test of tidiness.

Where there is violence, none of the scheduling material above applies. When an order of protection is in effect, a parenting plan cannot include contact that would violate it, and only the court can change the order. Courts can require exchanges in a specific place with no contact between the parents, name a third person to transport the child, or order supervised time with a named supervisor. If you are not safe, that is the question to answer first, and it is a different question from the one this page is about.

Protective-order and supervision provisions as described in Planning for Parenting Time: Arizona’s Guide for Parents Living Apart, Arizona Supreme Court, © 2009. Arizona-specific; the mechanism exists in every state but the statute and the standard do not match.

What we are not going to claim

Nobody can tell you what your particular eighteen-month-old will be like at fifteen because of this. The honest reading of the research is that the divorce itself does less of the work than the conflict around it, and that most children do not end up with lasting problems — but the studies disagree enough that a confident number here would be invention. We print none. What is well supported is narrower and more useful: conflict a child is exposed to is the variable you can actually do something about.

Direction of the literature as reviewed in Kelly, J. B. & Emery, R. E. (2003), ‘Children’s adjustment following divorce: risk and resilience perspectives’, Family Relations 52(4), 352–362. We do not print a percentage.

Every age, and the one after this

The same divorce lands differently at four, at eleven and at seventeen. The hub lists all six bands and the grown-up children.

All ages →

Next band

Three to five is the age at which a child starts believing they caused it, and does not say so.

Ages 3 to 5 →

If this is useful, send it to the other parent. Two people reading the same page is worth more than either of them reading it alone.

Page published13 September 2026
Where the developmental material comes from. Planning for Parenting Time: Arizona’s Guide for Parents Living Apart, Arizona Supreme Court, © 2009, read 13 September 2026. It was written by a statewide committee of judicial officers and mental health providers. This page draws on two of the guide’s bands, Birth to 2 Years and 2 to 3 Years, combined. Our band is wider than either of the source bands. The guide is dated 2009 and we could not find it on azcourts.gov on the day we read it — we used a public mirror. That a seventeen-year-old court publication is the best age-banded public document on this subject is a real gap, and we would rather say so than hide the date.
What we do not print. AACAP’s Facts for Families #01 (March 2011) is the usual citation here and it is not age-banded at all — it says young children, older children, teenagers, and nothing finer. We do not use it for a band-specific claim. On outcomes, the direction of the literature is that conflict between parents does more of the work than the divorce itself (Kelly, J. B. & Emery, R. E. (2003), ‘Children’s adjustment following divorce: risk and resilience perspectives’, Family Relations 52(4), 352–362), and we deliberately print no percentage, because the figures in this field move enormously with how the question was asked. Corrections go to thecusp.app/corrections with the date, what changed, and how long the error was live.