“Absent–minded scrawl or scribble usually executed in some unexpected place such as the margin of a book…” http://www.britannica.com
A ‘doodle’ is a coverall name for scribbles and little drawings. There are many different types of doodles, ranging from simple double retracing or embellishing letters within a printed text to intricate and extensive drawings. A common source of doodles is a note pad next to the phone. Doodles are considered to be expressions of the subconscious mind and as such can reveal a lot about a person’s mood and train of thought at the point of drawing; they are especially valuable to the Graphologist when used in conjunction with samples of the doodler’s handwriting.
Click on the audio links to listen to feedback from my last demonstration at a University