Abstract
Overlaps are frequent in spontaneous communication and they arise from the different reasons. Intentional breaking in somebody speech can be motivated by a recipient's effort to take the floor and replace a speaker (competitive type of overlaps) or to help the speaker when searching the right word for example (cooperative type of overlaps).
Unintentional overlaps can be found in the transition-relevant places most frequently. The specific kind of overlaps are back-channels; there are being used by a recipient in order to demonstrate "I am still listening to you" and "I am interested in you are talking about".
In this paper, we ask the question what can influence the number and the types of overlaps in the speech where the same speaker speaks with two different people. The used data come from a corpus of spontaneous spoken Czech ORTOFON.
We suppose that the number and types of overlaps can be influenced by the communication situation more likely and that the recipient breaks when understanding is threatened and, therefore, communication goal might not be achieved.