A two-year-old lines up toy cars in a row and looks up to make sure you’re watching. Another child picks up a banana, holds it to their ear, and says “hello?” A third child scatters blocks, picks up one at a time, and seems interested only in the sensory feel of stacking and knocking down. Each of these children is communicating something — and none of them need words to do it. When parents bring their child in for an evaluation, one of the first things I do is get on the floor and play. Not because it’s a warm-up activity — because how a child plays reveals what words can’t yet say.

Speech-language pathologists have long understood that play development and language development are deeply connected. The symbolic thinking that lets a child use a banana as a phone is the same cognitive capacity that lets them understand that the word “banana” represents the real object. Play isn’t a break from learning — it is the language of toddlerhood.

The Connection Between Play and Language Development

Language is built on symbolic representation — the idea that one thing can stand for another. When a child pretends a block is a car, they’re flexing the same mental muscle they use when they attach meaning to a word. Research consistently shows that the complexity of a child’s play closely parallels the complexity of their language.

Here’s how the two tracks typically develop together:

Around 12 months:

• Play: Explores objects by mouthing, banging, dumping — sensorimotor play
• Language: First words beginning to emerge; babbling with intent; points to share attention

Around 18 months:

• Play: Simple pretend begins — feeding a stuffed animal, “driving” a toy car
• Language: 10–20+ words; beginning to combine words; imitates words readily

Around 24 months:

• Play: Sequences actions — feeds doll, then puts it “to sleep”; assigns roles to toys
• Language: 50+ words; two-word combinations; asks simple questions

Around 36 months:

• Play: Complex pretend scenarios — “You be the doctor, I be the patient”; assigns properties to objects
• Language: 3–4 word sentences; follows multi-step directions; talks about things not present

When a child’s play level doesn’t match their age, it’s a meaningful signal — not just about language, but about the cognitive and social foundations that language is built on.

What I Look for During a Play-Based Evaluation

During a speech-language evaluation, I’m not just watching what a child does — I’m watching how they engage. A few specific things I pay close attention to:

Joint attention: Does the child look up to share something with me? Do they check to see if I’m watching? Joint attention — the ability to share focus with another person on an object or event — is one of the earliest and most critical precursors to language. A child who plays in parallel but never tries to share the experience communicates something important.

Symbolic play level: Can the child use objects symbolically? First pretending that a toy cup holds real water (object-dependent play), then that an empty cup has water (ideational play), then that their fist is a cup (object substitution) — each step reflects expanding cognitive and language capacity.

Initiating vs. responding: Some children only respond to my lead — they’ll play with what I hand them but never bring me something, never direct my attention. A child who initiates, shows me things, and tries to involve me in their play has a stronger communication foundation even if their words are limited.

Frustration tolerance and repair: When communication breaks down — when I don’t understand what they want — does the child try a different strategy? Point more clearly? Make a sound? Or shut down? The ability to repair communication is a language skill even without words.

Play flexibility: Does the child engage with a variety of toys and play schemes, or do they return repeatedly to the same fixed routine? Flexibility in play often parallels flexibility in communication.

When Play Development Raises Flags

Certain play patterns, when combined with limited speech, are worth discussing with an SLP:

• No pretend play by 18 months — no feeding a doll, no driving a toy car with sound effects
• Only sensorimotor play at 2+ years — still primarily lining up, spinning, or mouthing objects rather than engaging in any symbolic play
• Limited or absent joint attention — not pointing to share interest, not checking in with caregivers during play
• Rigid, repetitive play schemes — always playing the same sequence with the same objects, distress when the routine is disrupted
• No imitation in play — doesn’t copy simple play actions even when modeled

These aren’t automatic red flags on their own — context and the full developmental picture matter. But in combination with limited speech, they’re important information.

Play as Therapy: Why Sessions Look Like Fun

If you’ve ever watched a pediatric speech therapy session and thought “that looks like they’re just playing,” you’ve spotted something important. Play is the therapy. High-quality pediatric speech-language therapy is designed to feel like play to the child — because that’s the context where learning is most natural, motivation is highest, and new skills generalize most easily.

In therapy, I follow the child’s lead — building on what they’re already interested in — and use those moments to expand their language. If a child is fascinated by train tracks, that becomes the vocabulary set we build. If a child loves to pour water in sensory play, that becomes the context for turn-taking and commenting. The toys change; the principles stay the same.

This is also why parents are the most powerful therapy partners. You are your child’s primary play partner for the hours and hours between sessions. When you know what to look for and how to expand on your child’s play, every block tower and pretend tea party becomes a language-building opportunity.

Simple Ways to Use Play for Language at Home

You don’t need to turn every interaction into a lesson — children learn best when play is genuinely playful. But a few simple shifts can make a real difference:

• Comment, don’t quiz: Instead of “what’s that?” (a test), try “ooh, a red truck!” (a model). Your child learns from hearing language, not from being quizzed.
• Add one word: Whatever your child says or communicates, add one word. If they say “ball,” you say “big ball” or “red ball” or “throw ball.” Don’t demand repetition — just model.
• Play dumb: Pretend not to understand so your child has to try a new communication strategy. “Oh, you want the — hmm, which one?”
• Parallel play narration: Narrate what you’re both doing in simple, slow sentences. “You’re stacking. One, two, three! Oh! It fell down.”
•  Let them lead: Follow your child’s attention rather than directing it. What they’re looking at is what they’re ready to learn about.

These approaches work beautifully in both English and Spanish — and in households where both languages are spoken, using both is great for language development.

Key Takeaways

• Play development and language development are deeply connected — the symbolic thinking in pretend play uses the same cognitive foundation as word learning
• During evaluations, SLPs watch how a child plays — joint attention, symbolic play level, flexibility, and communication attempts — not just what words they say
• Limited or rigid play patterns, especially combined with limited speech, are worth discussing with an SLP
• Parents are the most powerful play-based language partners — simple strategies like commenting instead of quizzing make every play session a language opportunity

Frequently asked questions