It's fascinating to me that modern psychology and neuroscience often confirm the beliefs of ancient rhetoricians like Aristotle and Cicero. What they're essentially describling in this article is the scientific underpinning of some aspects of classic ethos and pathos appeals.

> We decide very quickly whether a person possesses many of the traits we feel are important, such as likeability and competence, even though we have not exchanged a single word with them

Competence is called phronesis - practical wisdom - by rhetoriticians, and demonstrating it is an important part of an ethos appeal. Antonakis, who is cited in the article talks about charismatic leadership tactics, which aren't much different to what's discussed in renaissance comportment guides, including the body language stuff.

The worrying thing is that logos, the rational aspect of persuasion, is demonstrably the least effective technique - also a common thread in classical rhetoric.

https://en.m.wikipedia.org/wiki/Modes_of_persuasion#Ethos