Theory on One Night Stands

Theory on One Night Stands
Science Now Abstract reports on research by a Scotsman on why girls tend to marry boys who look like their fathers and boys, girls who look like their mothers.
The observation is quite interesting but I had an issue with the general conclusion. Despite the author's statement that this study was 'good science'; given the limited data set of college students (which were most probably self-selected) the results cannot be extrapolated to the general population. Also, it is highly improbable that people even subconciously would make such big decisions based on one parameter - the face! Also the cultural bias is inherent in this study. Such a parameter would not make sense say - in an Indian context. This ain't right!
Despite these flaws this study makes a great after-dinner anecdote for idle speculation.