What They Say
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By three years of age, a child should have a vocabulary of 600 words with 80 percent intelligibility to a listener who does not know the child. ![]() |
When should a three-year-old be referred for speech evaluation? Evaluation is indicated if he or she has a vocabulary of 200 words or less, is not using short sentences, and has less than 50 percent intelligibility. This three-year-old has both limitation in vocabulary and few intelligible words, which means he should be evaluated.
You are right in being concerned. In my practice I found that, for the most part, parents and other family members familiar with the child are pretty good developmental diagnosticians. When the family is worried about an aspect of development in a child, the pediatrician should pay attention to their concerns.
But sometimes the family is not aware of a speech delay or its potential significance. Pediatricians sometimes don't ask the right questions. For example, instead of "How many words does he have?" it's better to ask "How does he let you know what he wants?" (A 3-year-old should be using sentences) and "Can strangers understand most of what he says?" (By age 3, this answer should be yes.)
Developmental Language Disorder (DLD) is the term we use for selective impairment of speech and language development in children without other manifestations of developmental delay. These children generally have normal intelligence, and their hearing and social-emotional development are also normal. (Children with a speech delay due to something like an Autistic Spectrum Disorder would not be classified as DLD.)
Estimates of Developmental Language Disorders' incidence range from about 5 to 10% of preschool children, and boys are much more likely to be affected than girls are. Although DLD is associated with a variety of possible underlying factors, in most cases the etiology is unknown -- although there is a often a family history for speech delay so that genetic factors may be playing a role.
Children with a suspected Developmental Language Disorder should be thoroughly evaluated immediately. Such a child needs a complete physical and neurological examination as well as a psychological evaluation to determine the child's intelligence level. Hearing should also be carefully tested as the child could have a selective hearing loss which might not be noticed by the family.
If and when the diagnosis of DLD is made, the child should be referred for immediate speech and language therapy. He will do best in a preschool that is experienced in teaching children with speech problems.
Explore the science of brain development and language acquisition during crucial early years.
Explore the science of brain development and language acquisition during crucial early years.
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