Black women are unapproachable. Not sure why is that. Are white males not attractive in black women eyes?
The effect is the reverse with white women as they tend to flirt with black man, hence the interracial children are mostly from black males and white females. I don't have a study to support this, but I do have personal experience.
Counterpoint: OK Cupid ratings appear to show that black men suffer rather less in the attractiveness stakes vs black women. http://blog.okcupid.com/index.php/race-attraction-2009-2014/ . If you see more black men + white women combos, those statistics would seem to suggest that it's because (for whatever reason) white men aren't as interested in black women as white women are in black men.
There are a lot of reasons for this, perhaps even more important reasons, but yes, black women are unapprochable as a white man. While other people interpret my normal social awkwardness/aloofness as just what it is, black women tend to take offense and think it's racist. There's nothing I can do to change that aspect of myself. I don't know why this doesn't happen with black men, it just doesn't really seem to, though.
However, I am concerned that my sample size may be too small to draw any valid conclusions.
Where are you approaching them? Have you even bothered trying, say, bars in black neighborhoods (I have) instead of palace where they're in the minority and in the defensive? Think about that for a second and ask yourself why not.
http://www.reddit.com/r/blackladies might provide a perspective on that. The general "feel" of this subreddit is that they're concerned about racism in an interracial date. The whole subreddit comes across as very anti-white.
The effect is the reverse with white women as they tend to flirt with black man, hence the interracial children are mostly from black males and white females. I don't have a study to support this, but I do have personal experience.