RTFA: http://www.dailymail.co.uk/sciencetech/article-115…

It was discovered that chimpanzees that favour their right hand play with more toys.

Right handed marmosets are quicker to explore new environments and foods, and appear less scared of predators.

Experts say the finding fits with evidence that the left side of the human body is controlled by the right side of the brain – which deals with fear.

The right side, in contrast, is controlled by the left of the brain, which suppresses fear.

Previous research has shown left-handers do slightly worse at maths and are more aggressive.

But left-handedness has also been associated with greater levels of creativity and skill. A disproportionate number of artists, musicians and sportsmen are lefties

Eh, I’m a lefty… define playful and adventurous please? Isn’t art, music and sports playful?