The Unacknowledged Information Unit

Ngo, Hood, Martin, Painter, Smith & Zappavigna (2022: 187):

It is important to recall here that clause and tone group may or may not map onto each other (Chapter 3), as evident in (19) and (19'). In (19) the underlining in each clause specifies Theme. However, New is specified in the tone group as the tonic syllable that composes phonological prominence through the major pitch movement of the tone group. This is shown in bold italics in (19').

Blogger Comments:

[1] This confuses content with expression. To be clear, New is a function in the structure of an information unit. A tone group realises an information unit, and its tonic realises the Focus of New information. It will be seen later that an explicit recognition of the information unit makes the problems with PARALINGUISTIC PERIODICITY more obvious.

[2] This confuses TONICITY with TONE. To be clear, the tonic syllable doesn't "compose" phonological prominence through the major pitch movement. The tonic is distinguished in terms of relative loudness ± duration. It is the pitch movement at the tonic that identifies the tone of the tone group.