Razib has written an interesting post on hypodescent in American culture:
What are your experiences of this phenomenon?
One of the main facts about American life is hypodescent, "the practice of determining the lineage of a child of mixed-race ancestry by assigning the child the race of his or her more socially subordinate parent." Barack Obama & the Kenyan politician Raila Odinga (who, probably falsely, claims to be Obama's first cousin) are both "black," despite the fact that when compared to each other Obama's substantial European ancestry is rather clear. I recall years ago watching the Oprah Winfrey television show where they were discussing the issue of self-hatred with a young black woman who was attempting to become impregnated by a white man (any white man) so that her children would "look white" and be beautiful. An adoption counselor rose up and told this young woman that her agency had many biracial children who they were attempting to place, and "none of them look white, they all look black." The clear and present background axiom here is that the power of black phenotype ensured the futility of this young woman's "quest."
In hindsight it seems to me that these perceptions are mostly socially constructed. Years ago I had a friend who was of mixed European and Japanese origin who was raised in Japan. I recall once that someone stated that they were surprised that her father was a white American, as she looked "totally Japanese." My friend got irritated, and replied that that was rather interesting as growing up in Japan people would tell her how white she looked. Obviously these sorts of gestalt perceptions are scaffolded by social context; in Japan my friend's white characteristics were very salient, while in the United States her Japanese ones were. The norms of reference were socially conditioned, so the scaling of phenotype did not have a linearly proportional effect on perception in identity. In other words, a rather small absolute physical deviation from the social norm can elicit strong relative perceptions of difference.
What are your experiences of this phenomenon?