“…Phonetic researchers identified, with a focus on political speakers, a number of acoustic-prosodic features that correlate (in culture-specific ways) with speaker charisma, such as the level, range, and variability of F0 and intensity, speaking rate, and the utterance-to-pause duration ratio. Previous phonetic studies also broke down charisma into simpler adjectives with which the relevant acoustic-prosodic features are strongly correlated [13,14,15,16,17,18,19].…”