Sounds like a learned behavioral model - just about everyone acts differently around their parents than their peers. That's only to be expected, since your peers will expect you to behave differently towards them than to your parents. So we learn to behave differently around them, which may also involve deeper effects like different ways of thinking around them.
Did your parents (implicitly or explicitly) discourage communicative and attentive behavior when you were growing up?
The Trouble with Bright Girls (article @ the Huffington Post)
Excerpt:
The topic of this article seems to relate to several common Less Wrong issues: the nature of human intelligence, and the gender imbalance among LW readers.
I'm not sure how much credence I give to the proposed explanation of the difference in mindsets. It may well have to do with socialization and feedback, but the specific description of feedback that is presented seems a bit too much of a "just-so story" to me. The difference itself is fascinating, though, and I hope more is done to further our understanding of it.