I've read height is weakly correlated (which intuitively makes sense, as greater height is more or less synonymous with larger body size). Also the second-to-f

I've read height is weakly correlated (which intuitively makes sense, as greater height is more or less synonymous with larger body size). Also the second-to-fourth digit ratio seems correlated. Longer ring finger seems to indicate more testosterone in utero. The (many) other claims appear to be bunk.