Final answer:
Professor Andrade discovered that doodlers create visual experiences without a particular story. Contrasting and repeated colors in doodles define the rhythm and movement of the drawing.
Step-by-step explanation:
In her study, Professor Andrade discovered that doodlers often create visual experiences without a particular story. She found that the use of contrasting and repeated colors placed next to each other in the doodles defined the rhythm and movement of the drawing. Additionally, doodles with conflicting color spectrums and sophisticated geometric patterns easily upset the eye, creating a hypnotic sensation. Andrade's study highlighted the importance of color and geometric elements in doodling.