Hi, I have 3 children 7,4 and 18months old. My daughter had a servere language disorder, my son the same except he also has a developmental delay which he is still being assessed with a paediatrician. My 18 month old only says Mum and dad but not directly to us and barely answers to his name. I know he’s young but I can see a big difference with him and my nephew who are only 3 weeks apart. Could this be a genetic thing with all my kids having this problem?