Word structure errors (misspeaking)

At too high a speech rate you may soon start to misspeak and produce word structure errors such as:

Syllable sequencing

The speaker puts syllables in the wrong order, for example: “infissufcient” (insufficient)

Errors in syllable structure

The speaker makes an error within a syllable, for example: “kind” instead of “mind”

Speech anticipation errors

The speaker anticipates a sound to come, for example: “grees gras” (green grass) or breaking screeches (screeching brakes)

Phonetic substitutions

The speaker substitutes sounds, causing incorrect words, such as “tevelision”, “brink deer”

Adding sounds/syllables

The speaker spontaneously adds an unintended sound or syllable to an existing word, for example in: “aggegration” (aggregation)

Sound substitutions

The speaker uses the wrong sounds, for example: “bid” for “bed”, or: “tea” for “too”.

Research shows that, although people who clutter are often less intelligible (caused by a too fast speech), they are able to produce correct syllable and word structures in some situations. This all has to do with their so-called speech motor control, which should be appropriate to speak fluently. Some researchers describe speech motor control as the ability to time articulatory, respiratory and laryngeal movements, that lead to fast and accurate syllable production. In cluttering speech motor control at word level is disturbed in high speech rate, which results in word structure errors. In other words, when clutterers lower their speech rate well enough, these word structure errors disappear.