This research attempts to investigate the planning process of an utterance. Two experiments have been conducted one with an online speech production task and one with a reading aloud production...Show moreThis research attempts to investigate the planning process of an utterance. Two experiments have been conducted one with an online speech production task and one with a reading aloud production task. The first produced word from the utterances is analysed to give an answer of the research question: how to plan an utterance during online vs reading-aloud speech production? It turned out that at syntactic planning the phrase for both experiments is the preferred unit of planning. Speech onset latencies and initial F0 peaks form evidence for this planning process. Within the first phonological word of the utterances no main effect was found for onset latencies in the reading- aloud task, while this was found in the online speech production task. Furthermore, no main effect was found for the initial F0 peaks in the online speech production task, while this was found for the reading- aloud task. Thus, the planning at phonological level seems to be different for both speech productions tasks.Show less