Lindsey Lam, M.Ed. CCC-SLP on Instagram: "Parents ask me this allll the time: “Is this a lisp?” A true lisp is a distortion of the S and Z sounds – tongue between the teeth, pressed on the teeth, air spilling over the sides, or pulled too far back so it sounds more like “sh.” If your child says “fink” for think or “dis” for this… that’s a TH substitution, not a lisp. Both can make speech harder to understand, and both are worth checking out with a speech therapist but we treat them differently i

Lisping: Know the Types, Causes, and How to Cure a Lisp | LDA

What is a lisp? | SpeechNet Speech Pathology