I wanted to know more about these two criteria.
I know that impressionistic means overly global and lacking in details. But what does it relate to? Does it mean that people with HPD have strong opinions, but cannot back them up with reasons or details? Or does it mean that when they relate their experiences (e.g. holidays, jobs, courses) they just give an overall impression and don't fill out any of the details?
Also, in relation to suggestibility... does it mean that their moral, political or any other beliefs can be easily changed by another person? will they do so only to gain attention?
I was wondering if there's a way of determining whether a person suspected of being HPD is suggestible? could you for example try and hold a debate with them on, say, the death penalty or abortion, first ask their opinion, then present your opinion and see if they're swayed by it?