The BBC has an article entitled Screening test for stuttering 'closer': see here .
Here some important quotes:
The Wellcome Trust team says a specific speech test accurately predicts whose stutter will persist into their teens. The researchers, based at University College London, used a test developed in the US called SSI-3 (stuttering severity instrument). They found that the SSI-3 test was a reliable indicator of who would still have a stutter and who would recover - while other indicators such as family history, which have been used, were less so.
I am not sure exactly what the hype is about, but it seems to be saying that the more severe you stutter as a child the less likely you recover? That sounds to me obviously true on average. That's also the factor I found in my outcome study that correlates with positive outcome: the less you stutter before treatment, the more likely you are fluent afterwards! I have to read the paper, but I am skeptical.
The most interesting comment is that "researchers also found so-called "whole word repetition" was not a reliable indicator of persistent stutter". I vaguely remember that being a prediction by the EXPLAN theory pushed by Pete Howell. But I could be wrong.
I am also not impressed by Mr Lieckfeldt's BBC comment "At five, there is still a window of opportunity to help those with a stammer."
And afterwards, no opportunity to help those with a stammer? ;-)
"If we intervene early enough, there is a really high success rate of normal, fluent speaking, whereas for six- to eight-year-olds, the recovery rate drops like a stone."
OBVIOUSLY, due to the natural recovery rate! Those that would recover, recovered already!