When to seek a speech-language evaluation for your child

Start with the milestones, not the worry

Most parents who wonder about a speech-language evaluation are not overreacting. They are comparing what they see at home with what they hear from other families, and something feels off. The useful question is not "is my child behind?" but "has my child missed a milestone that most children reach by this age?"

The American Speech-Language-Hearing Association publishes communication milestones by age range and notes they are designed to help you know what to expect and when to seek guidance from an audiologist or speech-language pathologist. ASHA also states these milestones are not a screening or diagnostic tool, so a missed milestone is a reason to ask a professional, not a diagnosis.

Milestones that most children reach

Use these as checkpoints. If your child has not reached one, that is your cue to ask about an evaluation.

• By 12 months: babbling, responding to their name, understanding simple words like "no."
• By 18 months: using at least 5 to 20 single words.
• By age 2: combining two words ("more milk"), a vocabulary of 50 or more words, and understood about 50% of the time by strangers.
• By age 3: speaking in short sentences and understood about 75% of the time.
• By age 4: clear enough that unfamiliar adults understand most of what they say.

These figures come from a clinical guide on signs a child may need speech therapy. The same guide notes that speech and language delays affect roughly 1 in 12 children in the U.S., so you are not alone in asking.

Red flags that mean act now, not later

Some signs are stronger than a single missed milestone. According to the same clinical guide, these warrant an evaluation:

• Not babbling by 12 months.
• Not using any single words by 18 months.
• Not combining two words by age 2.
• Loss of previously acquired speech or language skills at any age.
• Difficulty being understood by familiar people by age 2.5.
• Frustration or behavioral issues tied to communication.
• Not following simple directions by age 2.
• Limited eye contact or social engagement.
• Difficulty with feeding or swallowing in infancy.

A lost skill is the clearest signal. Do not wait to see if it comes back.

Speech delay vs. language delay

These are different problems, and the evaluation looks at both. Speech refers to how sounds and words are produced, including articulation, voice, and fluency. Language refers to the words used and how they are used to share ideas and understand others. A child can have one, both, or specific aspects of each. A speech-language pathologist evaluates which areas need support, which is why a general "speech" concern often turns into a broader language assessment.

What actually happens in an evaluation

A pediatric speech-language evaluation is a structured process, not a single test. According to a breakdown of the six key steps, it typically includes:

1. Case history. Medical, developmental, and educational background.
2. Parent and caregiver interview. Your observations of daily communication.
3. Behavioral observation during play. How your child communicates naturally.
4. Oral motor examination. Facial structures, oral movements, and motor speech.
5. Standardized tests. Tools such as the Goldman-Fristoe and Preschool Language Scale give objective, age-referenced measures.
6. Language samples. Collected through play and picture activities to show everyday skills.

Results are shared with you and lead to therapy goals, recommendations, or referrals. Parent involvement and home practice are part of what makes therapy work.

A practical checklist before you call

• Write down the specific behaviors that concern you, with ages and examples.
• Note whether any skill was gained and then lost.
• Check your child's hearing. ASHA advises having hearing tested if you find yourself repeating a lot or using a loud voice.
• Gather any prior screenings, pediatric notes, or school reports.
• Ask your pediatrician whether a developmental screening has been done. The American Academy of Pediatrics recommends standardized screening at 9, 18, and 30 months.
• If your child is under 3, ask your state's early intervention program for a free evaluation. You can request it yourself without a doctor's referral, and it must be completed within 45 days.

What to do while you wait

You do not need to wait for an evaluation to support communication at home. ASHA's general tips include talking about what you and your child are doing, using a lot of different words, reading together as much as you can, asking questions that need more than yes or no, and setting limits on screen time so that time goes to talking, reading, and playing. Do not interrupt your child to correct speech sounds; instead, say the sounds correctly when you talk.

How the Featured Expert Can Help

Domino Therapy offers speech therapy services for families, schools, and therapists, with both in-person and virtual support based in Philadelphia, PA. The practice focuses on enhancing communication skills and professional growth. If you are deciding whether an evaluation is the right next step, you can learn more at Domino Therapy.

If you are unsure whether your child's development warrants an evaluation, the safest move is to ask. ASHA's guidance is direct: don't wait to get help if you're concerned. You know your child best, and getting help early can stop later problems with behavior, learning, reading, and social relationships.