One-Month-Old Milestones: What Parents Can Expect
Key Takeaways
- One-month-old milestones are emerging abilities, not pass-or-fail requirements.
- Your baby may briefly focus on faces, respond to sounds and move reflexively.
- Steady head control and a consistent social smile are not expected yet.
- Talking, holding, reading and supervised tummy time support early development.
- Follow your baby’s cues and pause activities when they become tired or overstimulated.
- Contact your baby’s healthcare provider whenever developmental or medical concerns persist.
During the first month, your baby becomes more alert and responsive to the people and world around them. Common one month old milestones include briefly focusing on faces, reacting to sounds, moving the arms and legs and communicating needs through crying and body movements.
However, your baby’s movements are still largely reflexive, head control remains limited and they depend on you for comfort and regulation.
As you learn what to expect at one month, remember that every baby develops at their own pace. These emerging abilities are helpful guides—not deadlines your baby must meet on a particular day.
The sections below explore 1 month old development, the one month old baby milestones you may notice and simple ways to support your baby through everyday interactions. We also have milestone kits available to help you have more meaningful play with your newborn.
1-Month-Old Milestones at a Glance
At one month old, your baby is becoming more alert and responsive, but many movements and reactions are still reflexive. The following are typical observations you may notice—not deadlines every baby must meet. Every baby develops at their own pace.
The CDC’s formal developmental milestone checklists begin at two months. These one-month-old baby milestones are intended to help you observe your baby’s development and identify simple ways to support them.
| Developmental Area | What You May Notice | How You Can Support Your Baby |
|---|---|---|
| Physical & Movement | Jerky or reflexive movements; moving the arms and legs; clenched fists; hands moving toward the mouth; rooting, sucking, grasp and startle reflexes; limited head control; or briefly lifting the chin or head during supervised tummy time | Offer short periods of supervised tummy time while your baby is awake. Give your baby safe opportunities to move freely in different awake positions while supporting their head and neck. |
| Vision & Hearing | Focusing best at approximately 8–12 inches; interest in faces and high-contrast patterns; brief or inconsistent eye contact or visual tracking; startling or responding to loud sounds; or paying attention to a familiar voice | Hold your baby close during face-to-face interaction. Talk gently and slowly move your face or a high-contrast object within your baby’s field of vision. |
| Communication & Language | Crying to signal a need or discomfort; small reflexive or throaty sounds; facial expressions, body movements and other behavioral cues; or brief back-and-forth exchanges through gaze, sound and movement | Talk, read and sing to your baby during everyday routines. Notice your baby’s signals, respond warmly and pause to give them time to react. |
| Social-Emotional & Developmental | Calming when held, spoken to or comforted; responding to familiar voices, faces, smells and touch; reflexive smiles; or an emerging interest in social interaction | Hold and comfort your baby, offer skin-to-skin cuddle time when appropriate and involve parents, family members and other loved ones in gentle, responsive interactions. |
| Cognitive & Sensory | Briefly attending to a face or moving object; learning through looking, listening, movement and touch; responding to repeated routines; or looking away, yawning, fussing or arching when overstimulated | Repeat familiar songs, words and routines. Follow your baby’s lead, provide calm sensory experiences and offer a break when your baby shows signs of needing one. |
Physical and Movement Milestones at 1 Month
A newborn’s movements may appear jerky or uncoordinated because many are still guided by reflexes. Your baby may move both arms and legs, keep their hands in clenched fists or bring their fingers and hands toward their mouth. Rooting, sucking, grasp and startle reflexes are also common during the first month.
Head control remains limited at this age, so always support your baby’s head and neck when holding or repositioning them. During short periods of supervised tummy time, your baby may briefly lift their chin or head.
Different supervised awake positions give your baby opportunities to move and gradually build strength. Rolling, reaching, sitting independently and bringing the feet to the mouth are later movement milestones and are not expected at one month.
Vision and Hearing Milestones at 1 Month
At one month, babies generally see most clearly at close range—approximately 8–12 inches away. That is about the distance between your baby’s face and yours during feeding, holding or face-to-face play.
Your baby may prefer looking at faces and high-contrast patterns and may briefly follow a face or slowly moving object. Eye contact and visual tracking can still be brief or inconsistent.
Your baby may startle or otherwise respond to a loud sound and may become attentive when hearing a familiar caregiver’s voice. A newborn’s eyes may also occasionally appear to wander or cross.
Ask your baby’s healthcare provider if you have questions about your baby’s vision, eye movements or responses to sound.
Communication and Language Milestones at 1 Month
Crying is one of the primary ways a one-month-old communicates, although it is not intentional language and every cry does not have one specific meaning.
Crying, facial expressions, body movements and changes in alertness can signal hunger, tiredness, discomfort, overstimulation or a need for closeness. Your baby may also make small reflexive or throaty sounds.
Language development begins through listening. When you talk, read or sing during feeding, diapering and other routines, your baby hears the rhythms and patterns of language. Early back-and-forth interaction can happen through gaze, sound, movement and your response—even before your baby can make purposeful sounds or use words.
Social-Emotional Development and Bonding
Your baby is beginning to develop emotional security through responsive relationships with parents, family members and other loved ones. Familiar voices, faces, smells and touch may help your baby feel safe. Your baby may calm when held, spoken to or comforted, although their response will not always be immediate.
At this age, babies rely on caregivers for help regulating their emotions and physical state. Comforting your newborn does not spoil them or prevent independence. Holding, cuddling, speaking gently and offering skin-to-skin time when appropriate can support closeness and connection.
You may see your baby smile during sleep or at seemingly random moments. These early smiles are often reflexive. A more consistent social smile—one that occurs in response to another person—typically begins to emerge in the coming weeks.
Cognitive and Sensory Milestones at 1 Month
Much of your baby’s development happens through sensory exploration. Your baby learns by looking at people and patterns, listening to voices and other sounds and experiencing movement and gentle touch. They may briefly pay attention to a face or moving object before looking away.
Repetition and familiar routines help your baby begin to recognize patterns. When you respond consistently to crying, movement and other signals, your baby gradually learns that their actions are followed by a caregiver’s response.
Newborns can become overstimulated quickly. Looking away, yawning, fussing, arching or becoming less organized in their movements may indicate that your baby needs a quieter environment, a change of activity or help calming. Following these cues allows sensory experiences to remain comfortable and manageable.

How One-Month-Old Milestones Work
Developmental milestones describe abilities that most babies may demonstrate by a certain age. They help parents, caregivers and pediatricians track development over time, but they are not deadlines. Babies reach certain milestones at different times—even when they are close in age.
Development is not a race, and one-month observations should never be treated as a pass-or-fail test. Every child grows at their own pace, and day-to-day differences are common. What matters most is the overall pattern of your baby’s growth and development.
Observing your baby’s development is also different from formal developmental screening. Developmental surveillance is the ongoing process healthcare providers use to discuss caregiver concerns, observe a child and track developmental progress. Developmental screening uses a standardized tool at recommended ages or whenever a concern arises. The CDC’s milestone checklists begin at two months.
If you have questions about your baby’s development, share them with your baby’s healthcare provider. You do not need to wait for a screening visit. Your provider can recommend additional monitoring, evaluation or early-intervention services when appropriate.
How Premature Birth Affects Milestone Timing
If your baby was born more than three weeks before their due date, their healthcare provider may use corrected age when considering developmental milestones. Corrected age accounts for the number of weeks your baby was born early, providing a more individualized way to understand when certain abilities may emerge.
To estimate corrected age, subtract the number of weeks your baby was born early from their chronological age—the time that has passed since birth. For example, if your baby is 12 weeks old but was born four weeks early, their corrected age is approximately eight weeks, or two months.
Corrected age is generally used when considering a baby’s growth and development during the first two years. However, every baby’s medical history and developmental path are different. Follow your baby’s individualized care plan and ask their healthcare provider which age to use when tracking development.
If you have concerns at any chronological or corrected age, talk with your baby’s healthcare provider. They can help determine whether continued monitoring, further evaluation or early-intervention support may be helpful.
Simple Activities for a 1-Month-Old
The best activities for a 1-month-old are simple, brief and based on your baby’s cues. Talking, holding, singing and offering supervised opportunities to look and move are meaningful things to do with a newborn. You do not need to entertain your baby constantly. Choose moments when your baby is awake and alert, and pause when they show that they need a break.
Face-to-Face Time
Hold your baby so their face is about 8–12 inches from yours. This is approximately the distance at which many one-month-olds see most clearly. Talk softly, smile or make a gentle facial expression, then pause to see how your baby responds.
Your baby may look at you only briefly. Let your baby guide the interaction: continue while they appear interested and pause or stop if they look away, close their eyes, yawn or become fussy.
These short exchanges support connection and give your baby opportunities to become familiar with faces, voices and the back-and-forth rhythm of interaction.
Supervised Tummy Time
Place your baby on their tummy for short periods while they are awake and closely supervised. Tummy time gives your baby opportunities to move and gradually strengthen the muscles used for emerging head, neck, shoulder and upper-body control.
If floor-based tummy time is difficult, try placing your baby tummy-down across your lap or on your chest while you remain awake and attentive. Start with brief sessions and build gradually as your baby becomes more comfortable. Stop if your baby becomes tired or distressed.
Tummy time is only for awake, supervised play. Always place your baby on their back for sleep, including naps.
Talk, Read, and Sing
Your voice is one of the most engaging sounds your baby can hear. Talk about what you are doing during feeding, diapering, bathing and getting dressed. Your baby will not understand the words yet, but listening helps them become familiar with the sounds, rhythms and patterns of language.
Share simple books with clear pictures, even if your baby looks for only a moment. Reading at this age is as much about hearing your voice and feeling close to you as it is about looking at the pages.
Sing a Song: Sing a favorite song, repeat a simple rhyme or gently make up a song about your daily routine. You do not need to sing perfectly. Talking, reading and singing support connection and language exposure; they should not be presented as ways to increase intelligence or accelerate development.
Follow a Face or High-Contrast Object
When your baby is calm, awake and alert, hold your face, a simple picture or a high-contrast object about 8–12 inches away. Slowly move it a short distance from side to side and watch to see whether your baby briefly follows the moving object with their eyes.
Tracking at one month may be brief or inconsistent, and your baby may not follow the object every time. Stop if your baby looks away, closes their eyes or becomes fussy. A caregiver’s face or a simple black-and-white picture works well, so special toys or developmental products are not necessary.
Respond to Your Baby’s Cues
One of the most valuable newborn activities is simply noticing and responding to your baby. Crying, rooting or bringing the hands toward the mouth may suggest hunger. Yawning, closing the eyes or becoming less active may signal fatigue.
Fussing, arching or looking away may indicate discomfort or overstimulation. Quiet alertness, relaxed movements or brief attention to your face may show that your baby is ready to interact.
A cue does not always have one exact meaning. Observe the situation, respond with feeding, holding, repositioning, quieter surroundings or another form of comfort, and notice how your baby reacts. Through these everyday exchanges, your baby learns that familiar caregivers respond when they need support.
Direct interaction with parents and other caregivers is more valuable at this age than screen-based activities. Limit routine screen exposure for a one-month-old.
Video calling with loved ones can be treated differently when an adult stays with the baby, talks about the person on the screen and makes the experience interactive. Even then, let your baby look away or end the call when they have had enough.

Crying, Comfort, and Regulation at One Month
Crying is one of the main ways a one-month-old communicates. Your baby’s cries may signal hunger, discomfort, fatigue, distress, overstimulation or a need for closeness. However, each cry does not always have one clear meaning.
Most newborns cry more during the early weeks, with fussiness often peaking at around six weeks before gradually decreasing. Some babies cry considerably more or less than others.
At this age, babies rely on parents, family members and other familiar people for co-regulation—help returning to a calmer, more organized state. Responding warmly supports your baby’s emotional security, and comforting a newborn does not spoil them.
| What You May Notice | How You Can Respond |
|---|---|
Rooting, sucking motions or hands moving toward the mouth | Check whether your baby may be hungry. |
Yawning, closing the eyes or becoming less active | Reduce stimulation and help your baby settle. |
Looking away, arching or becoming increasingly fussy | Move to a quieter environment or pause the activity. |
Crying with signs of physical discomfort | Check your baby’s diaper, clothing, temperature and positioning. |
Crying or fussiness without an obvious cause | Hold your baby, speak softly, gently rock them or offer another familiar form of comfort. |
Sometimes your baby may continue crying even after you respond. This does not mean you are doing something wrong.
If You Feel Overwhelmed
If the crying becomes overwhelming:
- Place your baby on their back in an empty crib or another safe sleep space.
- Step away for a few minutes to calm yourself.
- Ask a trusted adult to take over when possible.
- Never shake, hit or handle a baby roughly.
Talk with your baby’s healthcare provider if the crying:
- Is new, unusually intense or very difficult to console
- Sounds weak, high-pitched or different from usual
- Occurs with poor feeding, vomiting or unusual sleepiness
- Occurs with breathing difficulties, fever or other signs of illness
Seek immediate medical care if your baby cannot be awakened, has trouble breathing, develops blue or gray lips or skin, or has a rectal temperature of 100.4°F (38°C) or higher.
For additional guidance, read Colic and Crying.
When to Talk With Your Baby’s Healthcare Provider
Your baby’s one-month checkup is a good opportunity to discuss development, share what you have noticed and ask questions. You do not need to wait for a scheduled visit if something concerns you.
Consider contacting your baby’s healthcare provider if you notice:
- Loss of an ability your baby previously demonstrated
- Unusually limited movement
- Consistent or pronounced differences between the two sides of the body
- Limited response to voices or other sounds
- Concerns about vision, eye contact or briefly following a face or object
- Unusual difficulty waking, feeding or responding
- A meaningful change from your baby’s usual behavior
- Any concern that persists or continues to worry you
These observations do not necessarily mean that your baby has a developmental delay. Developmental monitoring helps families and healthcare providers follow a baby’s growth and progress over time; it does not provide a diagnosis.
Depending on what you and your provider observe, they may recommend:
- Continued developmental monitoring
- A formal developmental evaluation
- A hearing, vision or medical assessment
- A referral to early-intervention services
Trust your observations. A persistent caregiver concern is reason enough to start a conversation, even when you cannot identify a specific missing milestone.
What It’s Like for New Parents
The first month with a baby can bring many emotions—joy, love, uncertainty, frustration or sadness, sometimes all in the same day. Fatigue, physical recovery and the adjustment to new responsibilities can make this period especially demanding.
Be gentle with yourself as you learn what your baby needs. You do not have to feel confident or enjoy every moment to be a caring parent. Rest when you can, accept practical help and share how you are feeling with someone you trust.
If sadness, anxiety, anger or overwhelm feels persistent or interferes with caring for yourself or your baby, talk with a healthcare or mental-health professional. Seeking support is a sign of care, not failure. Learn more about perinatal depression and when to seek help.
What Comes Next?
During the next month, your baby may become increasingly interested in social interaction and begin experimenting with new sounds. Head control and intentional movement will continue developing, although these abilities may still be emerging and inconsistent.
Every baby develops at their own pace. Explore Month 2 for a closer look at the next stage without expecting your baby to demonstrate every ability at a particular time.
What’s on Your Mind? Frequently Asked Questions About One-Month-Old Milestones + Questions From Real Parents
A one-month-old is not expected to have steady head control. Your baby may briefly lift or turn their head during supervised tummy time, but their head and neck still need support whenever you hold, carry or reposition them. Head control develops gradually over the coming months.
You may see your baby smile while sleeping or at seemingly random moments. These early smiles are usually reflexive rather than responses to another person.
A consistent social smile—such as smiling in response to your face, voice or smile—often begins to emerge during the coming weeks. Babies develop at different rates, so it may not appear at exactly the same time for every baby.
A one-month-old can become familiar with the voices, scents, touch and faces of parents and other consistent caregivers. Your baby may become more alert when hearing a familiar voice or may calm when held, spoken to or comforted.
This familiarity is not the same as adult-like recognition. It develops gradually through repeated, responsive interactions with the people who care for your baby.
While it is impossible to remember your earliest experiences, research on young babies finds that newborns must suddenly cope with lots of sensory information. Every one of their senses is affected by the major transition from the cozy, protected womb to the world of sights, sounds, smells, touch, and movement.
Inside the womb, babies spend a lot of time curled up in a cozy ball. Newborns, however, have bodies stretched out and moved this way and that. Think about how you have to shift your baby’s arms and legs just to change his outfit! Babies are poked, prodded, fed, patted, jiggled, rocked, tickled, held upright, and laid flat.
The world flashes by, often with sudden and dramatic changes in the intensity of light, sound, and temperature. Babies hear sounds both louder and clearer than they did in the womb. Even hearing their own cries can feel loud and overwhelming. And what about that new process of digestion? Babies’ bellies swell and shrink (often not so pleasantly) as food comes and goes.
During the first months of life, babies must adjust to and learn how to cope with this steady rain of sensory input. They are learning how to fall asleep when tired, how to focus their eyes and attention on faces and interesting patterns, how to cope with physical discomfort, and how to recognize and accept soothing and comfort.
Successfully learning how to deal with these changes means that a baby is becoming “regulated”—or able to maintain a regular daily pattern of feeding, sleeping, elimination, and interaction. Regulation is the goal of a baby’s first few months.
So it is important to keep in mind that newborns, while responsive in their own way, will gradually become more playful partners around 3 to 4 months of age. The ability to control their gaze, to focus their eyes and ears, and to organize and follow through on a “social” response has yet to develop. The best way to get to know your newborn right now is by watching and listening to him. What are the subtle signs that indicate the beginnings of distress? What positions, movements, sights, and sounds alert and engage him? Which comfort him when he’s distressed? Which help him drift off to sleep? Observations like these help your baby feel safe, comforted, soothed, and nurtured—both now and throughout his childhood.
This response was developed in collaboration with Robert Weigand, Director, Child Development Laboratory, Arizona State University.
You’re not alone. This is an extremely common phenomenon. Babies who exhibit this pattern tend to be particularly sensitive to the noises, lights, and other sensory stimulation in their environment.
These are the babies who, for example, cry and turn away at the sound of a ringing bell versus other babies who delight in the sound, turning towards the bell and perhaps kicking their arms and legs in delight. (And then there are the babies for whom the sound is not stimulating enough. They may glance at it and then turn away.)
For “sensitive” babies, noises, lights, and movement are more likely to arouse and awaken them. When your daughter is in your arms, she’s more protected from outside stimulation and from startling—a newborn reflex that causes her arms and legs to flail—another cause of wakening. Also, being snuggled in your arms is much more like being nestled in the womb than when she’s put down in the crib.
The first step toward easier bedtimes is to look for signs of fatigue and to put your baby to bed at that time. Don’t wait until she gets her second wind.
Many parents decide to keep the baby awake and play longer, hoping that she’ll get really tired and fall asleep. But this often backfires. Children who are overtired actually have a harder time falling and staying asleep, and they are more likely to wake up during the night.
Next, if your child is sleeping in a crib, try a bassinet as it’s cozier for a tiny baby. Swaddling (wrapping your baby up in a blanket) can also be very comforting and prevents them from startling. Once you put your daughter down, don’t rescue her too quickly.
If she awakens and cries, pat her stomach or talk to her soothingly before picking her up. If that doesn’t work, it’s okay to let her cry for 5 to 10 minutes to let off some steam and soothe herself. If this doesn’t work, pick her up, rock her, and then try to put her down again.
However, be sure to avoid providing any stimulation while you soothe her, such as turning on the lights or talking to her, as these are likely to arouse her and make it harder for her to fall asleep.
Helping your daughter fall asleep by holding and comforting her is what most babies need at this age. It is not “spoiling” her and will not encourage bad habits at this young age. But it is exhausting. If it is any comfort, by the time your child is between 4 and 6 months old, she’ll be better able to soothe herself and bedtimes will probably get much easier.
Your experience is quite common. Another mom recently told me how challenging it was to feed her 3-week-old in the middle of the night. One time, her husband turned on bright lights and covered their daughter’s legs in cold washcloths in an attempt to wake her to nurse.
They were both sure she’d starve to death if she wasn’t feeding on schedule. These attempts, though well-meaning, were unnecessary. Today, their daughter is a healthy 3-year-old.
Here are some reassuring facts. A 1-month-old should eat every 2 ½ to 4 hours. If a baby this age misses a feeding, he’ll likely make it up at the next one. You can also gauge your child’s food intake by doing a diaper count. If your baby is wetting six or more diapers each day, he is probably getting adequate fluid intake.
Frequency of bowel movements is more varied: Anywhere from one bowel movement with each feed to as few as one BM every 48 hours is normal. If your baby’s pattern falls within these general ranges, and he is alert, responsive, feeding vigorously when awake, and is steadily gaining weight, he is most likely doing fine. But if you notice any discomfort, a low wet diaper count, several missed feedings in a row, or your child seems unusually lethargic and unresponsive, contact your doctor immediately.
Keep in mind that a young baby’s feeding and sleeping schedule will change from day to day as he begins to figure out day and night. This variation is normal. Young babies should be fed “on demand” (when they’re hungry), so hold off on any sleep training and try not to have any firm expectations about feeding schedules until he is about 4 months old.
Over the coming weeks, as you get to know one another even better, you and your baby will eventually settle into a schedule that feels comfortable and familiar.
As tough as it can be for new parents who just want a few minutes to themselves, the fact is that very young babies often prefer being held to any other position. This makes sense from an evolutionary standpoint—staying close to your source of food and protection is actually pretty savvy.
When you hold your son, he feels your body warmth and hears your heartbeat, a sound familiar from inside the womb. He smells your scent. And when you cuddle him, he feels safe; it reminds him of the good old days back inside your belly. Plus, the closer he is, the more likely he is to receive your caresses and kisses.
But what can you do to get the breaks you need? Some parents find that a baby carrier or sling is a good compromise. They allow you to carry your baby while you get things done around the house. My daughter was a lot like your son, and I remember marveling at the fact that even as I bobbed up and down while unloading the dishwasher, she never made a peep in the baby sling.
This is also the time to call some of those people who offered to help with the baby—friends, family, neighbors, or a postpartum doula—to come over for an hour or two and hold your son while you shower, return e-mails, run errands, or just take a much-needed nap.
Because your son sleeps with you at night, he is probably pretty used to falling asleep next to another warm body. So as far as his napping goes, you can either let him fall asleep in the baby carrier, or you can help him start learning how to sleep on his own.
Try swaddling him to mimic the feeling of being held, and then putting him down. Stay with him and rock him, sing, or stroke his back or hand until he settles down. Babies this young simply don’t have the ability to calm themselves yet, so it’s not the time to let him “cry it out.”
It will take time for your son to learn to fall asleep on his own. Actually, it’s a skill he will spend most of his first 6 months (to a year) mastering. So be patient and seek out trusted caregivers who can give you a break when you need it. Believe it or not, your son will be crawling and walking before you know it, and you’ll be running to catch up with him!
Although it has already undergone an amazing amount of development, the brain of a newborn baby is still very much a work-in-progress. It is small—little more than one-quarter of its adult size—and uneven in its development.
By birth, only the lower portions of the nervous system (the spinal cord and brain stem) are very well developed. The higher regions (the limbic system and cerebral cortex) are still rather undeveloped.
Because the lower brain is the most developed at birth, it is largely in control of a newborn’s behavior: all of that kicking, grasping, crying, sleeping, rooting, and feeding are functions of the brain stem and spinal cord.
Even a newborn’s ability to track a bold moving object, like a red ball of string, or to focus on Mom or Dad’s face is thought to be controlled by visual circuits in the brain stem.
The human brain takes time to develop, so nature has ensured that the parts of the brain responsible for the most vital bodily functions—breathing, heartbeat, circulation, sleeping, sucking, and swallowing—are up and running by the time a baby is born. The rest of brain development can follow at a more leisurely pace, allowing a baby’s life experience and caregiving environment to shape his emerging mind.
In spite of all the recent hype about “making your baby smarter,” scientists have not discovered any special tricks for enhancing children’s brain development. Normal, loving, responsive caregiving seems to provide babies with everything they need to explore, learn, and become good thinkers and problem-solvers.
The one form of stimulation that has been proven to make a difference is language: Babies and children who are talked to, read to, and provided with lots of verbal interaction show somewhat more advanced language skills than children who are not as verbally engaged by their caregivers.
Because language is critical to cognitive and social development, simply talking and listening to your child is one of the best ways to make the most of his or her critical brain-building years.
Go for it. Exposing your baby to a natural and rich environment in both English and French will help her become bilingual before she ever begins any formal education. And, by providing your baby the opportunity to learn the language of your family’s culture, you are helping her develop a cultural identity and connection to her family’s roots.
There is still a lot of research to be done on childhood bilingualism. What we do know is that children can learn two or more languages during childhood without any problems. And that in fact, it is much easier to learn language in the early years. The following are some variables that impact bilingual development that parents should keep in mind:
Babies learn at their own individual pace. So your child may develop her language skills at a different rate than a monolingual child and it may have nothing to do with the fact that she is learning two languages at once. *A key variable for bilingual acquisition is consistency in how children are exposed to the two languages throughout their early childhood.
You can provide consistency in a variety of ways. For example, you might speak only French to her while Dad speaks only English. Or, only French is spoken in the home and English outside the home.
An important consideration for parents living in communities where the non-English language is not supported is to provide children with lots of non-English language experiences in the home to compensate.
Be aware that your child may develop her vocabulary at a different rate than a monolingual child. Children learning two languages at the same time may have smaller vocabularies in one or both languages compared to children learning only one language.
However, when both languages are taken into consideration, bilingual children tend to have the same number of words as monolinguals. Keep in mind that these differences are usually temporary. By the time most bilingual children have entered school, their vocabulary in both languages has caught up with monolingual children.
And don’t worry about your child getting confused by the exposure to and use of two languages. She will begin to sort it out on her own, and even sometimes use words from both languages in the same sentence. This does not mean she is mixed up! This combined usage is a very normal stage. So delight in the fact that you are giving your child a wonderful gift of two languages.
