BBC NEWS | Health | Sex cues ruin men's decisiveness

BBC NEWS | Health | Sex cues ruin men's decisiveness: "Catching sight of a pretty woman really is enough to throw a man's decision-making skills into disarray, a study suggests."

The men's testosterone levels were also tested - by comparing the length of the men's index finger compared to their ring finger.

If the ring finger is longest, it indicates a high testosterone level.