The publisher regrets a typographical error in the above article in Seminars in Speech and Language, Volume 29, Number 4, 2008, pages 331–338. On page 333, right column, line 15, the sentence reads “And does a nonspeech activity like sticking out the tongue become a speech-facilitating oral motor activity when it is used to help a child produce a /∋/?”
The sentence should read “And does a nonspeech activity like sticking out the tongue become a speech-facilitating oral motor activity when it is used to help a child produce a /θ/?”