As a long-time salesman, I’ve picked up a few tricks along the way in the deception category. I’ve never used most because my field demanded I sell to other salesmen and we don’t like being conned. One of those is “mirroring” your customer. It has to be done subtly or it is obvious and insults their intelligence, but it is basically adopting mannerisms and speech patterns/accent of your potential customer. The purpose is, of course, to give the customer a feeling of familiarity, assuming their habits are developed from their close associations with family and friends.

If it is a personality flaw, and not something one “learned” it suggests that one is all but devoid of personality or conviction of their own and is desperate to find approval. In a politician it would mean someone who is flexible to an extreme, adopting whatever perspective or ideology one is in contact with at the moment. This would explain her inability to take solid positions on issues and always “coming around” to differing viewpoints as her tribe dictates. If it is a skill she learned, she is “expert level”, as one can see in this video interview with Robert Reich now that you know what you are looking for.