I had considered initially that there might just be some intuitive element at play. Then I looked at the wording, as you have. But later the wording changes to accommodate for what they think people want to hear. It no longer has the purity of their first sentence to a new person. People’s expectations of others often mirror their expectations of themselves, and is always interpreted through their own perspectives. Their raw prediction then becomes a unique window in through their first sentence.

However, their are still many things you can take from later conversations, etc. In terms of what sort of a person someone is, it has oft been said- and is my own experience- that people who say nothing or very little in public, but then lots in private are frequently dishonest. On the other hand, those who speak freely in any audience are far less duplicitous.

Although you can establish quite a lot from words, you must also remember the high (though also highly debatable) proportion of non-verbal communication. This is sometimes claimed to be 70%. Another important factor with speech itself is the tone.

Nevertheless, I think it would be very interesting to see more research done on the interrelationship of words. I think the a priori and, in particular educational background, will play a major part, as well as the circumstances of the communication. But if research could be done on that ‘purer’ first moment, I think it could be incredibly productive.