IMPROPER ACTIVATION AND MONITORING FAILURES IN SPEECH PLANNING

During speech production, not only currently spoken fragments of utterances but also both their past and future portions are being monitored. Errors in which sounds or words are either spoken ahead of their time(anticipations), or produced later than they should be (perseverations), evidence that speech planning activates the present, deactivates the past, and prepares to activate the future. The aim of this research was to study the frequency and phonetic characteristics of anticipations and perseverations in Hungarian. Altogether 227 serial order errors of spontaneous speech samples by twentyseven native speakers were analyzed (using Praat). Our data revealed that higher-organized units could drift away from their planned position to a relatively longer distance in time than lower-organized units while the latter tended to do so more frequently than the former. The self-inhibitory turn-off mechanism seems to be slower than the pre-planning mechanism in the case of speech sounds and word parts. Temporal patterns confirmed that the speech production mechanism controls pre-planning more successfully