&gt; There is no scientific study that proves this but you will note through common sense that males and females tend to act within their gender role over 95% of the time.<p>Then I propose such a scientific study be performed.<p>I don&#x27;t like appeals to &quot;common sense&quot; in political matters (and unfortunately gender and sexuality is very political right now). Because, hey, if you&#x27;re wrong, wouldn&#x27;t that be an interesting result?