Language Acquisition

What is Language Acquisition?

Language acquisition is the lifelong process through which we learn to understand and use language in its spoken, written, or signed forms. It begins in infancy and continues as we age, shaping how we communicate, connect, and navigate the world around us.

The Basic Idea

Ever watched a baby reach for their mother and murmur “mama” for the first time? That single word carries more than sweet sentiment—it marks the moment language is beginning to take shape in a child’s mind, where curiosity and instinct combine to transform sound into meaning. 

Language acquisition might seem simple at first glance, yet it’s anything but. It begins before the first word is ever spoken. From the moment they’re born, infants start to notice the melody of language in the voices around them. They hear the gentle rise and fall of a lullaby, the quick chatter of family life, the comforting murmur of bedtime stories. Each voice offers something different, and while they can’t yet grasp the meaning of each word, they’re already listening. They’re soaking up the smallest bits of sound, what we call phonemes—like how changing the “k” in “kiss” to an “h” gives you “hiss” makes the word sound completely different, even before they understand what it means. They’re also beginning to sense the small pieces of meaning that words can carry, called morphemes. These might be full words, like “dog,” or smaller bits that add a twist to what’s said, like the “s” that indicates “dogs” means more than one. 

The early sounds and coos babies make are a kind of rehearsal—an opening act for how they’ll learn to share their ideas with the world. They might not realize it yet, but every giggle and gurgle is a first attempt at transforming what they hear into a way of expressing their own thoughts and feelings. Maybe you’ve felt that same rush of frustration and excitement when trying to master a new language. You know the feeling: that spark when a phrase finally clicks, or that pause when a word feels foreign on your tongue, spoken again and again until it feels familiar.

Though language may appear to unfold naturally, it never follows a perfectly straight line. Small shifts in a child’s surroundings, like hearing a new language at daycare or the arrival of a different caregiver, can change the way they learn.1 It’s a process that seems to grow organically, but is shaped by countless small experiments, hesitations, and breakthroughs.

The story doesn’t end in childhood. Even as adults, we’re still adding to our collection of words and phrases. We pick expressions from friends, adapt the vocabulary of our jobs, or echo the words of the books we read. Language never stands still. It bends and reshapes itself to fit the people and experiences that fill our lives. It’s through language that we show who we are and how we want to be seen. It grows with every chapter, adapting to the voices and ideas that keep us moving forward.

The limits of my language mean the limits of my world.


— Ludwig Wittgenstein, Austrian-British philosopher

About the Author

Maryam Sorkhou

Maryam holds an Honours BSc in Psychology from the University of Toronto and is currently completing her PhD in Medical Science at the same institution. She studies how sex and gender interact with mental health and substance use, using neurobiological and behavioural approaches. Passionate about blending neuroscience, psychology, and public health, she works toward solutions that center marginalized populations and elevate voices that are often left out of mainstream science.

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