Purpose: Of the three currently recognized variants of primary progressive aphasia, behavioral differentiation between the nonfluent/agrammatic (nfvPPA) and logopenic (lvPPA) variants is particularly difficult. The challenge includes uncertainty regarding diagnosis of apraxia of speech, which is subsumed within criteria for variant classification.…

This account of the intonation of English is part of ongoing research at the University of Birmingham, England. It attempts to take account of how intonation contributes to the communicative value of an act of speech. An introductory chapter provides a short discussion of some crucial terms: pitch, loudness, stress, rhythm, and tone unit. The…