Early language problems may hinder adult literacy

Children with a limited vocabulary at the age of 5 may be at increased risk of poor literacy as adults, a study published Monday suggests.

UK researchers found that among more than 11,000 34-year-olds followed since childhood, those who had shown “very limited” language development at age 5 were at increased risk of low literacy.

As adults, one-third still showed a “poor grasp” of reading and writing skills, the researchers report in the journal Pediatrics.

Still, the researchers say, the flip side of that finding is that two-thirds of children with significant language problems went on to develop competent literacy. And certain characteristics of children’s home life seemed to make a difference in whether early language problems persisted.

One of those was whether parents read to their children on a regular basis.

“There is ample evidence that reading to a child can help prevent early problems in child development and learning,” lead researcher Dr. Ingrid Schoon, of the University of London, told Reuters Health in an email.

“Our study suggests that reading to a child might also have long-term beneficial effects,” she said.

The findings are based on 11,349 UK adults who were part of a long-term national study of children born in 1970. At age 5, participants took a standard vocabulary test where the child is shown a set of pictures, then asked to pick the one that is associated with a particular word. At age 34, they took a test of basic literacy.

Overall, 4 percent of participants were found to have “very limited” language skills at age 5. These children were nearly seven times more likely than their peers with normal language skills to later score poorly on the adulthood literacy test.

However, that risk was diminished when the researchers accounted for other factors that commonly went hand-in-hand with childhood language difficulties.

Children from families with no income from paid employment were at greater risk of poor adulthood literacy, as were those who lived in crowded homes. Time spent reading with parents also mattered; 5-year-olds whose parents read to them daily had a lower risk of adulthood literacy problems.

The effects of those factors, Schoon’s team found, were independent of language problems in childhood, and suggest ways to help overcome such early difficulties with words.

“Without attempts in improving the socioeconomic and housing conditions, as well as the literacy environment experienced by the child during the early years,” the researchers write, “the likelihood of success in improving language and literacy skills may be diminished.”

The findings also suggest that more should be done to screen for early language problems in disadvantaged children, according to Schoon’s team. Screening should not be limited to preschool, they write, since many lower-income children may not attend preschool.

Instead, they say, both pediatricians and schools could continue to monitor older children for language difficulties.

SOURCE: Pediatrics, March 2010.

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