Because children do not come with manuals (unfortunately), it can be challenging for parents to know what is in the range of normal development for all kinds of milestones: eating solid food, sleeping through the night, crawling, walking, toilet training… the list goes on. It doesn’t help that every child seems to develop at his or her own pace. Even children in the same family can mature at completely different rates. The same holds true for the emergence and development of speech sounds.
When a young infant is babbling, what she is actually doing is imitating and practicing the speech sounds that she is hearing in her environment. This is part of the reason why the first sounds to develop are usually m, n, p, b, w, h and the vowel sounds. It is incredibly reinforcing for a baby to have her parents repeat back what she is “saying.” As she grows into a toddler and preschooler, her sound repertoire begins to expand to include t, d, k, g, f, s, z, l, sh, ch and y. As a general rule, the closer that she gets to her first day of kindergarten, the more consistently she is using these sounds correctly (especially if she finds storybooks interesting and they are part of her daily routine). At this point, her mom and dad may also notice that the r, j, and v sounds are making an appearance (though they may have shown up earlier). It is quite common that the th sound is the last one to be produced correctly.
Although speech-language pathologists refer to this general guideline when assessing a child’s articulation, there are many factors that can influence the development of speech. A history of recurrent ear infections can affect when a child will acquire speech sounds (it’s pretty hard to produce what you can’t consistently hear) and sometimes there may be concerns with the coordination or strength of the muscles (lip, tongue and jaw) that support speech production. For most children, speech develops within a normal range of time. The key for those that are having some challenges being understood is early identification and intervention. If you have any concerns about your child’s speech sound development, please feel free to contact a speech-language pathologist. We’re here to help.
