Toddler Development: Your Toddler From 16 to 18 Months

Your little one sure is keeping you on your toes with all the walking, talking, climbing and playing at this age. And you may feel like you have a shadow everywhere you turn because your toddler can’t get enough of you and the exciting world around them!

Now that they’re mobile and on the go, their personality will start to shine. You may notice you have a chatty child or a quiet observer. Whatever you do or say, you’ll likely have a mini who wants to copy everything you do!

Developing Language Skills

By this time, most toddlers are saying at least three words, and some may even know up to fifteen.(1) Their language skills may still sound like gibberish—but you’ll learn to identify what they’re trying to say over time. And you’ll notice they’ll start to string two words together based on associations to form short sentences. If you go to a park, for example, you might hear your toddler say, “Play ball!” to express what they want to do.(1)

Constantly in Motion

You’ve probably noticed your toddler is always in motion! Now that he can walk without holding onto anyone or anything, the world is his oyster! Running, dancing, walking backwards, and climbing are ways your child may assert his independence and expend his energy.(2) If your child likes to climb on things, double-check your home’s childproofing systems to keep your active toddler safe.(2)

Discovering Independence

As your toddler develops language skills, you may find you have a bossy child on your hands! Hearing them say “no!” is common at this age as they are learning to assert their independence and preferences. (1) It may feel tiresome, and you may start to wonder if you have a tiny teenager on your hands! But small acts of defiance or rebellion are normal in toddlerhood.

Toddler Development: Milestones From 16 to 18 Months

While every child develops differently, there are a few milestones to look out for at this age.

Here are some things your child will likely do by the time they’re 18 months old:

Social/Emotional Checklist(3)

Points at something interesting to show it to you
Extends their hands for you to wash them
Asserts independence but makes sure you’re still nearby
Looks at short books with you, shows an interest in pictures(4)
LIfts up a foot or puts an arm through a sleeve to get dressed

Language/Communication Checklist(3)

Can say 3 or more words aside from “mama” or “dada”
Understands up to 50 words(4)
Points to familiar people or objects in pictures(4)
Can follow simple, one-step directions (even if they’re not accompanied by a gesture)
Repeats words they overhear in conversation(4)
Shakes head yes/no in response to simple questions(4)

Movement and Physical Development Checklist(3)

Scribbles with markers, pens, pencils, etc.
Uses fingers to feed herself
Uses a cup without a lid (spilling sometimes to be expected)
Attempts to use a spoon
Walks unassisted (and seldom falls)(4)
Climbs on things without help (like a couch or chair)
Can squat to pick up a toy(4)

Cognitive Checklist(3)

Can play with simple toys (like pushing a toy truck)
Will copy your actions (like sweeping with a toy broom as you clean)

What You Can Do to Encourage Healthy Development in Your 16 to 18 Month Old

Encourage Play with Other Children

If you’re worried you’re raising a self-centered child who can’t share, don’t fret—thinking the world revolves around him is a normal part of your toddler’s development. It’s okay that he doesn’t quite understand the concept of empathy yet or know that people have feelings or thoughts that differ from his own. Let your toddler engage in parallel play, or the type of play that happens side by side with other children. Over time, he’ll acquire the skills to play well with other children his age. Offer toy options during playdates. Consider hiding favorite toys to minimize possessiveness that may inspire hitting or biting.(5)

Model Sharing (But Understand When They Don’t Want To)

Sharing probably won’t come naturally to your 18-month-old, and that’s okay. Try to model good behavior and demonstrate what sharing looks like. The concept of sharing will become easier as your child develops, but don’t rush it. Accept that parallel play is more developmentally appropriate for this age.(8) Your child probably won’t fully understand what sharing means until they’re 3 or 4 years old.(10)

Set and Enforce Boundaries (But Avoid Saying ‘No!”)

It’s natural for your toddler to want to get into everything. At this age, they’re curious about the wide world around them! But your number one priority is keeping your child safe. So even though he may object, boundaries are necessary in accomplishing that. You can narrate boundaries as you’re enforcing them. Try saying things like, “You want to be barefoot, but you need to wear sneakers at the playground.” Or, “You want to have dessert now, but your body needs a healthy dinner first.”(6) Reserve a strong “no!” for when your child is in danger or hurting others—hitting or biting another child, for example.(7) This will make it more likely that they listen to you than if you say “no” frequently.(7)

Continue to Narrate Your Day

You’re probably already used to narrating your day as a way to develop your child’s vocabulary. Keep it up! Your toddler understands a surprising amount of what you say. And the more language you expose him to, the more new words he learns! Research shows that children who are spoken to more often process and understand words at a faster rate than children who are spoken to less.(7) If you regularly point out dogs when you’re on a walk with your toddler, for example, it will be easier for him to learn the word “leash” when you say, “Look at the dog on the leash.” This is because some of the words are already familiar to him.(7)

Sing Together

Did you know rhyming songs like “Humpty Dumpty” actually have a purpose? Singing rhymes together or reciting simple poems can help your toddler understand that certain sounds, words, or letters go together. (5) What great preparation for learning to read! And if your child mispronounces a word, repeat the word with the correct pronunciation so they can hear it—and try pronouncing it—again.(7)

Do a Safety Check

18-month-olds are frequently on the move and curious about everything. Avoid toys with small parts or magnets as those pose serious hazards to children. Keep baby gates up. Teach your child how to safely get down the stairs when accompanied. Be cognizant that your child may be learning how to open doors or baby gates. If you have a pool, make sure your toddler can’t get to it to avoid a tragedy. Consider signing up your toddler for swimming lessons, too.(9) While not a substitute for adult supervision, it’s a great way to introduce water safety skills. It also encourages parents and children to have fun in the water together.(9)

Embrace Every Stage

Support your child through all stages of development! To read more blogs like this with helpful parenting tips, subscribe to my newsletter!

You can also check out the other blogs in the infant and early childhood development series for more information on how to help your child grow and learn at different stages.

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