8-18 Months Development Details
Physical Development
Milestones: By 18 Months, Most Children Can:
- Walk without holding onto anyone or anything.
- Scribble on paper.
- Drink from a cup without a lid, even if it spills.
- Feed themselves with their fingers.
- Try to use a spoon.
- Climb on and off a couch or chair on their own.
Physical Development: Your child will naturally learn new skills and likely move from one skill to the next without being “taught” how to do the next thing.
Body Awareness and Control:
- Your child will be more aware of their body around other objects and people.
- Your child will start having separation awareness and understanding that you are leaving them. You will want to let them know you are leaving and give them time to wave goodbye while reminding them that you always come back.
Muscle Development and Coordination:
- Your child may still use crawling to move around.
- Your child will move from crawling to walking and begin trying to climb.
- Your child may love to push things, including boxes and toy strollers.
- Your child will coordinate eyes and hands while exploring or holding objects.
Nutrition:
- Your child will start to chew and bite and feed themselves with their fingers.
- Your child will eat three meals a day plus snacks.
Safety:
- Children need to be watched as they are moving around.
- Children should have low, safe things to pull up on and walk around, like a couch or couch cushions on the floor, where they can walk from one thing to the next while holding on.
- When children begin walking, it is important to ensure their area is free from sharp edges since they fall often while learning.
- Children will seek comfort from their parents when faced with people or spaces.
Self-care:
- Your child can help get dressed and undressed.
- Children can help feed themselves using their fingers even if all the food doesn’t make it into their mouths.
Language & Literacy Development
Milestones: By 18 Months, Most Children Can:
- Say “mama” or “dada” and three other words.
- Follow one-step directions without you making hand motions. This looks like your child giving you a toy when you say, “Give me the toy.”
Communication: Your child understands many words, and they are developing the ability to speak more and more of those words to communicate their feelings, needs, and ideas.
Expressive Communication/ Expressive Language:
- Children use crying, sounds, the beginning of words, and gestures to communicate their feelings, needs, and ideas. Gestures include things like waving, pointing, reaching, and pushing. Pushing is a common way young children communicate before they have the words to express themselves.
- Children will also use biting as communication to let their peers or adults know they are frustrated.
- When young children start saying words, sometimes they say a part of the word, like the beginning or end.
- Children at this age often use a single word to refer to several similar things. For example, they might call cats, dogs, goats, and sheep all “kitties.” They recognize that these animals share common features, such as having fur and four legs, but they have not yet learned their specific names. Additionally, children may replace the actual name of an object with the sound it makes, calling a cat “meow, meow” or a car “vroom.” They frequently use one word to convey an entire idea. For instance, “up” might mean “pick me up,” “uh-oh” indicates something has spilled, dropped, or broken, and “mama” could express a desire to find their mother.
- Children will move from repeating single words to using multiple words to communicate.
- Children will use words in social ways to peers, such as “no,” “yes,” “mine,” and other words.
Receptive Communication/Receptive Language:
- You can respond to your child in the conversation using the correct words (for example, when the child says “Googie,” the parent responds, “That is a big doggie!”).
- Saying what you are doing during the day helps your child learn language (for example, saying “I’m putting on my shoes so I can go outside.”)
- Pausing after you ask your child a question lets them understand the back and forth of communication.
- Children listen to words that are spoken directly to them as well as to conversations that are happening around them.
- Children pay attention to tone of language and can notice when your tone is excited, loving, frustrated, or scared.
- Children can understand simple requests better when you use a gesture as well. For example, if you hold your hand and say, “Give me your shoe, please.”
Emergent Reading
- Children are interested in books. They enjoy spending time with you, looking at and reading a book. They watch you when you read, follow the pictures with their eyes, point to pictures, turn the pages, and name some things in the book.
- Children will treat books like other toys and objects.
- Having books for your child will let her include them in different parts of her day.
- Using small board books with children allows them to participate in turning the pages more easily.
- Read books to your child. This is your child’s first experience of “reading” and the beginning step to her understanding that books hold stories, words, and information.
- Read slowly so your child can listen to your words, examine the pictures, and help turn the pages.
- Young children like to read the same books over and over.
- You can make simple books for your child using photos of people and things he enjoys. These homemade books help her see that books can represent things she knows about.
- Talk about pictures and books with your child. Learning that pictures represent things is the first step to understanding that letters can also represent things.
- Children will bring a book to an adult to be read to and respond positively to an adult’s offer to read to them.
- Print and alphabet awareness as shown by beginning to recognize that labels convey meaning (E.g., Jared sees a box of Cheerios and says, “Oh, Oh!”)
- Children will enjoy repeatedly listening to the same books and may appear to be reading the words because they have memorized the story.
Writing:
- Children will use different writing tools like crayons, markers, and pens and notice that they can make marks on paper.
Social-Emotional Development
Self-Concept and Social Identity:
- Show likes and dislikes in ways consistent with the family’s cultural expectations (E.g., Brady vocalizes pleasure while playing but cries while changing a diaper.)
- By 18 months, your child recognizes their name and can more reliably tell you what they need or want using gestures, sounds, and some language.
- Your child will lift their arms up, knowing their caregiver will pick them up.
- Your child can tell you if they want to play, go outside, or do something themselves.
- They are excited about trying out their ideas and may be starting to resist doing what you tell them, but you are still very important to them.
- Your child is also beginning to see themselves as separate from you, so they spend some time resisting your ideas. As soon as they learn to say “no,” they have a lot of uses for it. “No, I won’t get dressed.” “No, I won’t brush my teeth.” “No, I won’t be gentle with the cat.” While challenging for the parent, this flexing of their independence is helping them figure out that they are not the same as you—instead, they are a different and separate person from you.
Tips to support self-concept and social identity:
- Encourage your child to do as much for themselves as they want to. Young toddlers love to participate, learn new skills, and feel like they are helping.
- They might help with dressing and undressing, feeding themselves, pouring their own water from a little pitcher to their cup, helping to wash the vegetables, putting their toys in the basket, or sweeping the floor with a small brush.
- It may take some more time for them to do these things themselves, but spending this time with them lets them know that you think they are capable.
- It is helpful to divide these tasks into easier steps, for example, holding their pants while they step in or helping them find the hole in the shirt before they try to put it on.
- When your child says “no” or won’t do what you want, remember that they are practicing being their own person.
Attachment:
- Show preference for their family members and primary caregivers and may still demonstrate fear or rejection responses to unfamiliar adults.
- Relies on trusted adults to feel secure trying new activities
- Your child wants to share their ideas with you, be comforted by you, and know where you are.
Tips to support young children’s attachment:
- Take time in new situations to help your child adjust to new people. If a family friend will be watching your child when you go out, invite her over the day before or a couple of hours before you go out to visit and play with them. The more familiar your child is with the new person, the more comfortable they will be with you leaving.
- If your child starts childcare, ensure they have time to get to know the new caregiver and setting.
- Visit a few times and stay with them so they can check in with you while exploring the new setting.
- Get to know the new caregiver yourself so you can confidently leave your child with them.
- Practice leaving your child for shorter periods at first so that they learn that you will come back.
Learning about others:
- By 18 months, your child is very interested in people—both adults and children. They are often interested in other children and may show you by walking right up and playing alongside them, taking their toy, or watching them from a distance. All of these demonstrate an interest in peers, but they still have very beginner skills in playing with friends. Waiting for their turn is hard because they don’t understand how time works, so they worry they won’t ever have a turn.
- Your child is showing awareness and interest in other people’s emotions but still doesn’t fully understand other people’s feelings.
- Your child shows concern when someone is crying but also believes that people around them feel the same way they do, so they may be surprised when they hit another child and that child starts crying.
Tips to support young children in learning about others:
- Provide opportunities for your child to play with other children (at the park, with neighbors or family, in childcare, or in parent/child classes).
- Remember that while your child may be excited about other children, they don’t always know how to play with them, and there may be conflict over toys or hesitance to join the play.
- Supervise your child closely at this age when they are playing with other children. They may need help expressing their ideas and feelings and listening to the ideas of others.
- If your child shows interest when other children express feelings, you can describe what is happening to them.
- “Lola just said goodbye to her daddy. She looks sad. Maybe she is missing her daddy.”
Regulation and Expression (Behavioral and Emotional):
- Your child experiences many feelings at this age. They can be very excited, sad, frustrated, loving, and happy and may also begin to be fearful.
- They need adult support to regulate physical expressions of emotions (E.g., Marigold pulls another baby’s hair until the teacher takes her hand and shows her how to pat the baby gently.)
- Because your child can remember things so well, they also have a lot of feelings. If you take something away from your child, they might cry for a long time, even though you offer them other exciting things to play with, because they still remember that they were enjoying something else.
- Children this age will begin to express various feelings through vocalizations, facial expressions, and body movements.
Tips for Regulation and Expression:
- Even when you need to stop your child or set a limit with them, you can let them know you understand that they have a good idea.
- “I’m going to stop you from pulling the cat’s tail.” (limit)
- “It seems like you are interested in the cat and her soft and long tail.” (stating their good idea)
- “When you pull her tail, it hurts, and she meows and runs away.” (giving them information)
- “If you want to play with the kitty, you can touch her softly on her back or wiggle the string for her to chase.” (offering choices and another way to express their idea)
- “Can you be gentle with the cat, or shall I help you move to the other room and find something else to do?” (follow-through/offering two possibilities to keep the cat safe)
- Help your child find safe ways to express their feelings:
- “If you are mad, you can tell your friend, ‘I’m mad.'”
- “If you are mad and want to hit something, you can hit this cushion.”
- When your child is fearful, stay close and offer comfort. Sometimes, your child doesn’t want to be taken away from the scary situation but wants you to help. If your child is afraid of the neighbor’s friendly dog, you can squat down next to them, hold them, and talk about the dog. If they want to move away, take your cues from them. Sometimes, taking a photo of the scary thing and letting your child hold and talk about the photo will help them deal with their fear.
- Let them know that all their feelings are healthy and that you will listen to or acknowledge their feelings.
Cognitive Development
Milestones: By 18 months, most children:
- Solve problems by focusing on things they find interesting, even when there are distractions around them.
- Usually listen to an adult and stay engaged with a toy or activity for a longer time.
- Inquiry and Exploration
- Can explore objects using their senses and manipulate them in a variety of ways. For example, a child may shake or bang a toy to make it work
- Do things to get a response from familiar adults and children. For example, a child drops peas and looks over to his caregiver as they fall from the table to the floor
- Reasoning and Problem Solving:
- Act out ideas about how things work by repeating and changing their actions
Play:
- A child may initiate turn-taking with a trusted adult. For example, a child gives a small toy to his grandmother and she gives another toy to him, they repeat this several times
- A child may invent ways to attract adult attention and engage with them. For example, a child pretends to cough to gain her teacher’s attention and repeats this when her teacher laughs
- Children may express delight in ways appropriate to their culture
Executive Function:
- Children can carry out their own one-step plan. For example, a child puts a hat on her head
- Children can have expectations of what will happen based on previous experiences. For example, a child pulls his mother’s hand to bring her to the refrigerator, knowing she will offer juice to him
- A child may explore objects that interest them with focus and persistence
- Symbolic Representation:
- Children may draw comfort from objects that represent family members or primary caregivers. For example, a child keeps her mother’s scarf in her clubby and clings to it when upset.
Tips to support cognitive learning:
- At this age, your baby may love to use their senses to explore the world. You can give them toys with different textures, sounds, and colors. Safe household items like wooden spoons, soft fabrics, or even a plastic container can be fascinating for them to explore
- Your baby may start to understand that their actions can cause things to happen. Simple toys like rattles, pop-up toys, or even banging a spoon on a pot can show them cause and effect.
- Your baby is a little scientist, always testing out their theories. Stacking cups or blocks can help them understand concepts like size and order. You can ask them simple questions like, “Which one is bigger?” to get them thinking.
- After playtime, you can talk about what they did. For example, “You put the block on top of the other one!” This helps them reflect on their actions.
- Let them try fitting shapes into a shape sorter. Even if they don’t get it right at first, they’re learning through trial and error.
- Introduce new toys or activities gradually. This helps them adapt to changes and new experiences. Encourage them to reach for toys just out of their grasp. This promotes intentional movement and planning. Play simple games like hiding a toy under a blanket and then revealing it. This helps them remember where it is.
- Engage in activities that require attention, like looking at picture books together. Point out and name the pictures to keep their focus
- Praise their efforts and persistence in trying new things. Even if they don’t succeed immediately, they’re learning to keep trying.
Number Sense Development
Milestones: By 18 months, most children:
- Begin to learn counting through everyday activities. For example, you might give them “three pieces of banana – 1, 2, 3” or suggest reading “two books.”
- Grasp the concept of quantity. For example, if they want more bread, they might reach for it and say “more” or use sign language to ask for more
- Experiment with small numbers. For example, children know they can usually only carry one item in each hand, which gives them a lot of practice with the number “two” even if they can’t say it yet.
- Begin to think about size and comparison. For example, a child might put a little sand in one container and a lot in another, describing the container with more sand as “bigger.”
- Show an early grasp of numbers and order. For example, your child might line up two or three cars in a row
Tips to support Number Sense skills:
- During the bath, count the bath toys as you put them in the water, like “One duck, two ducks.”
- Talk about the shapes and sizes of different bath toys, like “This is a big boat, and this is a small fish.”
- During meal times, Count pieces of food, like “One, two, three pieces of apple.”
- Count the utensils or plates while setting the table, like “One spoon for you, one spoon for me.”
- Count things you see outside, like “One tree, two trees.”
- Sing counting songs or rhymes together, like “Five Little Ducks” or “Ten in the Bed.”
- Count the number of cars you see of a particular color, like “One red car, two red cars.”
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Explore these additional resources to observe how your child grows and changes over time and whether your child meets the typical developmental milestones. Families, grandparents, early childhood providers, and other caregivers can participate in developmental monitoring.
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