You know the phone call. It’s a quick one you couldn’t put off, five minutes at most, right in the middle of the day. Two minutes ago your three-year-old was playing happily on the floor, busy and content, but the moment your attention goes to the call, something shifts. They come to your leg, then climb into your lap, then start whining and pulling at your sleeve, and finally knock the cup off the table while watching your face the whole time. You cover the phone and mouth “one minute,” which does nothing, and you end up wrapping the call early because you can’t hear anything anyways. And the moment you turn back and give them your attention, the fussing melts away and they’re fine.
That quick calm is a clue. It wasn’t random, and it wasn’t your toddler simply falling apart. The fussing was doing a job, and the job was to get you back, so the moment your attention returned, it switched off.
Most behavior that keeps happening works like this. It can look like chaos, but it’s usually working toward something. In behavior science, the thing a behavior reliably produces is called its function, and children, like all of us, repeat what works. When a behavior keeps showing up, it’s usually because it keeps paying off.
The handful of things behavior is usually after
Most of the everyday behaviors that wear parents down are chasing one of a few things.
To get you. Your attention is one of the most valuable things in a toddler’s world, and they aren’t picky about which kind, so a warm reaction and a frustrated one both count, and even a sigh and a “not now” can be worth the effort. This is the whining that starts the second you pick up the phone, or the sibling fight that gets louder the moment you leave the room.
To get something. Often the behavior is aimed at a snack, a toy, the tablet, or one more show, something your child wants and doesn’t have yet, and it tends to stop the instant the thing appears.
To get out of something. Other times behavior is trying to end or avoid something unwanted, like the demand, the transition, the toothbrush, or leaving the park, and if the fuss makes the hard thing go away, the fuss has done its job.
And sometimes it’s none of these, because some behavior just feels good, like spinning in circles or repeating a favorite sound. That kind isn’t aimed at you or at a prize, and it usually doesn’t need managing the way the others do.
The question that changes your response
Here’s why this is worth slowing down for. The same behavior can mean completely different things: a whine when you’re on the phone and a whine at bath time can sound identical and yet need opposite responses. So the most useful question in a hard moment isn’t how do I make this stop, but what is this for.
There’s a simple way to tell, which is to notice what makes the behavior switch off. If it stops the moment you look up and engage, it was for you; if handing over the toy ends it, it was for the toy; if it settles the second you drop the demand, it was to get out of something. It’s worth turning that around, too, and asking yourself what your response taught your child about the behavior: if the fussing brought you back, then fussing worked, and a behavior that works is one they’ll reach for again.
Once you know what a behavior is for, you have real choices. With attention, the most powerful one is often to give it before the behavior has to ask, a few minutes of unhurried, focused time early on, so your child isn’t left to earn it the harder way. What you’re avoiding is a pattern where the surest way to reach you is to escalate. You aren’t ignoring your child; you’re answering the real need, on purpose, instead of the noise around it.
Not a hard time on purpose
None of this means your toddler is being manipulative. A three-year-old who ramps up the second you’re on the phone isn’t running a scheme; they’re using the few tools they have to get a real need met. That’s exactly why so much of early childhood looks like big behavior over small things.
When you can see what a behavior is for, it stops feeling like defiance and starts looking like communication. And that shift, from how do I stop this to what is my child telling me, is the one that makes everything else easier. You won’t read it right every time, and that’s okay. You’re just learning your child’s language.
Ashley Weber is a board certified behavior analyst (BCBA-D) and the founder of Phase Family Coaching, where she helps Bay Area families navigate childhood behavior with practical, evidence-based parent coaching.