Waiting on a phone call with a pen in your hand? Bored on a train? Chances are you'll doodle.

等电话的时候一手拿着笔？火车上无聊想打发时间？很可能你会随手涂涂鸦。

Consultant Graphologist Tracey Trussell has analysed the most common doodles and their meaning in a new piece of research for Samsung and while sketching squares express a down-to-earth nature, etching boxes is a sign of materialism.

Here she shares the psychology behind those inkings, so what do your mindless scribbles reveal about your inner psyche?

Circles: Drawing round shapes expresses the need to belong, love and be loved.

Squares: If you're etching squares then this expresses a down-to-earth, practical and constructive nature.

Triangles: Scribbling triangles? Tracey says this shows a dynamic, powerful and ambitious nature.

Hearts: One of the most common doodles, hearts are symbolic of love and romance, and tell of an affectionate and sentimental nature.

Webs: They may be more unusual and complex but drawing webs reveals calculating personalities who are good at enticing people into a particular situation.

Flowers: If your flower has a large circular centre, this expresses confidence and the enjoyment of a good social life. Meanwhile, carefully drawn flowers betray the obsessive-compulsive personality.

Boxes: It's not good news for anyone drawing boxes as Tracey believes that while this shows ambition, it can also be a sign of materialism.

Coils or spirals: Drawing these complicated shapes means doodlers thrive on variety, creativity and growth.