DS1 was informally assessed by a SALT today on the instigation of his keyworker (at nursery) because he stammers (he always has done) and also because he can't pronounce certain letters (r, f, th, l, r). She spoke to me when I picked him up and said the letter pronunciation will probably sort itself out, but she wants us to come for a proper assessment at the clinic wrt the stammer, and he will probably need some speech therapy. Has anyone had this? What is it likely to involve and will it upset him? He's very sensitive/self-critical.