
Empty speech pauses, defined as a silent interval longer than 0.150
s, were divided into three categories according to their duration: a)
short—from 0.150 up to 0.500 s long; b) medium—from 0.501 up to
0.900 s long; c) long—more than 0.900 s long. Added verbal material
was defined as any verbal material that produces a modification in the
listener’s conscious knowledge, and given verbal material as intended
not to produce such a modification (Chafe, 1974). The label unclassified
was attributed to filled pauses (such as “ehmm”, “uhh”), and/or short
interruptions (such as “ap*”) following empty pauses. Empty pauses
identifying changes in scene, ...