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Inner speech, that little voice that people often hear inside their heads while thinking, is a form of mental imagery. The properties of inner speech errors can be used to investigate the nature of inner speech, just as overt slips are informative about overt speech production. Overt slips tend to create words (lexical bias) and involve similar exchanging phonemes (phonemic similarity effect). We examined these effects in inner and overt speech via a tongue-twister rec- itation task. While lexical bias was present in both inner and overt speech errors, the phonemic similarity effect was evident only for overt errors, producing a significant overtness by similar- ity interaction. We propose that inner speech is impoverished at lower (featural) levels, but robust at higher (phonemic) levels.

Keywords

  • LANGUAGE & LINGUISTICS, PSYCHOLOGY, EXPERIMENTAL
Original languageEnglish
Pages (from-to)528-537
JournalCognition
Volume106
Issue number1
DOIs
Publication statusPublished - 1 Jan 2008
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