← ELI5 中文
Explain like I'm 5

Your baby offers
you a snack.
Do you eat it?

For every parent who's been "fed" a cracker by a baby
No. 253Pregnancy & KidsPart 36 of 36Fact-checked Oct 14, 2026
Video2:24 · English voice (AI) · English subtitles

Can't play sound? The illustrated version is right below.

Read the transcript

The full narration of the video.

Your baby holds a cracker up to your mouth. You open wide, pretending to bite. He snatches it back and giggles. You take a real bite. His lip wobbles, and he cries.

Same cracker. Why such different endings? So when a baby offers a cracker, don't bite just yet. That reach can mean three different things. Most grown-ups assume: at my mouth means it's for me.

People who study babies found that's only one of them. Think of it this way: the cracker is a ball. He can show it, fake a pass, or really pass it. First, the show. He holds the cracker up in front of you, gripping it tight.

It means: Look what I've got! One study visited twenty-five babies every month. It first showed up around seven months; by ten months, half the babies did it.

Bite now, and you've grabbed a treasure he only meant to show you. Next, the fake pass. The cracker comes toward you, you reach, and he pulls it back. British psychologist Vasudevi Reddy studied this kind of baby teasing. She saw it in babies as young as eight months.

He does it again and again, watching your face for a reaction. If the grown-up gets upset, babies rarely try it again. He isn't after you eating it. He's after the look on your face.

On a court, a fake pass fools the other team; a baby's fake pass is to make you laugh. Take a real bite, and you've eaten the game. That's likely why he cries, though no study has tested it directly. Last, the real pass. He puts the cracker in your palm, lets go, and doesn't want it back.

This time he's truly sharing. The University of Washington ran an experiment: a stranger "accidentally" dropped fruit out of reach, and stretched toward it. Among nineteen-month-olds, fourteen of twenty-four picked it up and handed it over.

Another group was tested right before mealtime, hungry. Nine of twenty-four still gave it. When the grown-up tossed it on purpose and didn't reach, almost no baby handed it over. So on a real pass, take a tiny bite, or say thank you and hand it back. Either is fine.

How to tell? Watch his hand. Gripping tight is a show; reaching then pulling back is a fake; letting go is the real pass. Not sure? Open wide, go "nom" — and don't really bite. If he laughs and pulls back, play another round; if he presses it into your palm, it's really for you.

Most of the time, a baby holding out a cracker is talking to you, not feeding you. How old was your baby the first time they held food to your mouth, then pulled it back?

1

In one line

Don't bite yet. Watch the hand. A held-out cracker can mean three things: look what I've got, a tease, or a real share. Only the last one means "eat it."

2

What you think
vs. what's going on

YOU THINK
At my mouth means
it's for me.
You take a bite, and the baby cries.
ACTUALLY
That reach has
three meanings.
Baby researchers see three different things: holding it up to show you, offering and pulling back, and putting it in your hand.

Think of the cracker as a ball. A baby can show it, fake a pass, or really pass it.

3

Show, fake,
real pass

Show: gripping tightHeld up to your eyes: "Look what I've got!" It starts around seven months; by ten months, half of babies do it.
Fake: offer, pull backYou reach, and he pulls it away. Babies as young as eight months do it.
Real pass: let goInto your palm, and he doesn't ask for it back. This time he's really sharing.
4

On a fake pass,
he wants your face

British psychologist Vasudevi Reddy studied babies who tease like this. Every family has seen the four things she noticed.

Again and againPull back, offer again.
Eyes on your faceHe watches for your reaction.
You laugh, he repeatsYour face is the prize.
You frown, he stopsTeases that upset adults rarely come back.

On a court, a fake pass fools the other team; a baby's fake pass is to make you laugh. Take a real bite and you've eaten the game. That's likely why he cries, though no study has tested it directly.

5

On a real pass,
even hungry babies give

The University of Washington tested 19-month-olds. A stranger "accidentally" dropped fruit out of reach and stretched toward it.

HE REACHES
14 of 24 babies
handed it over
On average within three seconds. A hungry group, tested just before mealtime: 9 of 24 still gave it.
HE TOSSES IT
Almost no one gives
When he tossed the fruit on purpose and didn't reach: 1 of 24 gave it, and none in the hungry group.

Babies can tell who really wants it. On a real pass, take a tiny bite, or say thank you and hand it back. Either is fine.

6

Next time a cracker
reaches your mouth

① Watch the handGripping is a show, offer-and-pull-back is a fake, letting go is the real pass.
② Not sure? Go "nom"Open wide, but don't bite. If he laughs and pulls back, play another round.
③ Real pass? Accept itA tiny bite, or a thank-you and hand it back. Either works.

Why babies keep handing you things: Why do babies keep handing things to mom?

Most of the time,
a baby holding out a cracker
is talking to you, not feeding you.
How old was your baby the first time they held food to your mouth, then pulled it back?
Created by Samshang × Maddox
Sources: Eckert, Winkler & Cartmill 2020, Biology Letters (review citing Reddy and others: babies as young as eight months offer an object and pull it back when an adult reaches, repeating while watching the adult laugh; teases that upset adults are rarely repeated) pmc.ncbi.nlm.nih.gov/articles/PMC7532725 · Reddy 2008, How Infants Know Minds (Harvard University Press) · "Showing and giving: from incipient to conventional forms" (25 infants followed monthly from 6 to 10 months; early forms of showing and giving at seven months; 13 had fully shown an object by ten months) pmc.ncbi.nlm.nih.gov/articles/PMC9310177 · Barragan, Brooks & Meltzoff 2020, Scientific Reports (University of Washington, 19-month-olds: 14 of 24 handed fruit to a reaching adult vs 1 of 24 when it was tossed on purpose; hungry group 9 vs 0; mean under three seconds) pmc.ncbi.nlm.nih.gov/articles/PMC7000707 · Romper, interview with a pediatrician (playing along or a polite "no thank you" are both fine) romper.com/parenting/toddler-keeps-trying-to-feed-me-grownup-expert-advice
UP NEXT

How Do Babies Learn to Talk?

Babies don't memorize words. They listen, quietly count which sounds stick together, keep the sounds that matter, and learn from real people.

No. 122 · 5 minKeep going →
← Back to ELI5