A motorcycle rider's attitude could be easily guessed by checking the clutch setting in his motorbike. There are generally two modes of clutch setting, a half clutch, a full clutch.
To brush up, clutch is a device that controls the amount of power transferred from the engine to the rear wheel. Generally clutch device is made of multiple discs called wet plates and power is transmitted across these plates by friction. The clutch lever on the left hand side controls the amount of friction and hence the power transmitted. When one fully pulls the lever, the clutch plates move away from eachother and no power transmitted. On the other hand, when the clutch lever is released fully, maximum friction is available amidst the plates and maximum power transfer. The magic is how good one is, in handling the clutch to get the maximum out of the bike, be it 100cc or 1500cc.
Half clutch is a setting, where a full pull of the clutch lever does not pull the clutch plates far away. So effectively, the operating range of the clutch lever is so small. Even when the lever is released a little, one can see the rear wheel starts rolling.
If you check the bikes of boys vrrooomming in the signals like rockets, they would have half clutch or even smaller. Boys with half clutch have a fast and furious attitude. They need everything on their plate faster. These guys cannot wait for anyone. These guys are performers given opportunity. These boys are quick witted and even some of them are impulsive too.
On the other hand, the full clutch boys are patient movers. They take their time to do things. These guys are steady and focussed. If you take a statistics across age groups, full clutch setting would be opted by a lot of middle aged men, who are good in decision making, logical thinking. These boys can wait for their best catch. It is pretty difficult to make these boys angry.
With respect of biking, half clutch boys outperform full clutch boys significantly. The reason is full clutch will not let the bike to perform to its fullest. One should not forget the half clutch ruins the clutch plates and engine gears faster.