Anyone who knows what anxiety, and sometimes anguish, parents go through when they have a child who is still not talking at age two, three or even four, can appreciate what a blessing it can be to have someone who can tell them what to do — and what not to do.

That someone is Professor Stephen Camarata of the Vanderbilt University Medical Center, whose recently published book, Late-Talking Children, gives parents information and advice that they are not likely to find anywhere else. And it does so in plain English.