Why are some speech errors detected by self-monitoring "early" and others "late"?

Abstract

In this paper we attempt to answer the question why in self-monitoring some segmental speech errors are detected in internal, some in external speech, and others not at all. This was done by re-analyzing data obtained in two earlier published SLIP experiments. It is hypothesized that detection of errors that are similar to the correct target takes longer than detection of errors that are dissimilar. It is also hypothesized that the time available for error detection in internal speech and for detection at all is limited. Results show that indeed a major factor is the strength of phonetic contrast between two competing response candidates.