Genetic studies are investigating the likelihood that at least some speech and language problems may be inherited or passed down from parents to their children. Additional studies are characterizing inherited communication disorders. The effect of frequent ear infections on the development of speech and language is also an area of investigation. Other scientists are distinguishing types of speech and language errors to determine which ones may be overcome by maturation alone and which will need some type of intervention or therapy. Another area of study is the effect of speech and language development on later school performance.
Further research is characterizing dialects that belong to certain ethnic or regional groups.
NIH Publication No.