From The Independent:
It is a common ethical dilemma set by philosophy professors – is it right to kill someone to prevent further deaths?
According to scientists the answer differs depending on your gender, with women less likely to commit murder because they have a stronger aversion to harmful action.
Researchers from the US, Germany and Canada analysed data that asked 6,100 people a range moral questions, including whether they would kill a young Adolf Hitler to stop the Second World War.
While men and women both calculated the consequences of their decision and computed how many lives might be saved, females found it harder to commit murder and were more likely to let Hitler live.
Of course there are logistical problems with this, as in any hypothetical time-travel scenario. Would this time machine drop you off armed with a suppressed pistol in Hitler’s bedroom while he slept, or would you simply be dumped onto Unter den Linden in broad daylight with nothing but a cheap folding knife? It says “kill a young Adolf Hitler,” but what fun would that be? Most people would want to kill the 1930s version—before the Holocaust, of course, but not so long before it that he’s not recognizable as the scummy dictator on the cusp of a genocide. Seeing him in full uniform and armband is a potent motivator.
Anyway, who might have guessed that men and women were different? It’s almost as though there’s some biological reason men and women are not exactly the same.