There are four types of lisps. They include lateral, palatal, interdental and dentalised. Lateral lisps occur when the tongue is positioned to make an "L" sound instead of an "S" sound. Palatal lisps involve the center of the tongue meeting the roof of the mouth, so the "S" sound is made from the position of the "H" sound. Interdental lisps involve making the "TH" sound instead of the "S" sound and are common among children up to the age of five, but it eventually goes away. Dentalised lips are when the "S" sound is muffled or unclear. Lisps can be corrected through speech therapy exercises conducted at home.
Instructions
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1
Use the breathing method to correct a lisp. This method involves breathing through the nose rather than the mouth, since the tongue sticks out, causing the lisp.
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2
Practice physical, sound and motor cues administered during speech therapy. This includes having the individual with the lisp repeat word lists and word associations to a therapist, spouse or parent.
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3
Correct the individual's speech by indicating its incorrect and having him speak slowly, break the words into syllables and repeat the words clearly several times to correct the placement of the tongue.