This advice-column-style blog for SLPs was authored by Pam Marshalla from 2006 to 2015, the archives of which can be explored here. Use the extensive keywords list found in the right-hand column (on mobile: at the bottom of the page) to browse specific topics, or use the search feature to locate specific words or phrases throughout the entire blog.
Q: I have been working with a child for a year and a half and R has been very resistant to improvement. I just stumbled upon a good R in STRI-words like “strike”, “stripe”. Yet he has problems doing what you call “lerring” [sliding back-and-forth between L and R]. Why do you think this is?
R can be a grand mystery and you never know what pattern will cause it to sound right. Just go with whatever works. It could be that he can do a Back R but not a Retroflex R, thus “Lerring” won’t work for him; it depends on which R he ultimately uses.