taught Then there are two additional skills, numbers 6 and 7: Drawing from memory Drawing from imagination Edwards's early work was based in part on her understanding of neuroscience, especially the cerebral hemisphere research which suggested that the two hemispheres of the brain have different functions. To avoid the so-called "location controversy" (how the two major cognitive functions are distributed in the individual brain depending on handedness and other factors), she termed the modes "L-mode" and "R-mode." These designations appeared in the original 1979 edition of "Drawing on the Right Side of the Brain." She described L-mode as basically a verbal, analytic, sequential mode of thinking, and R-mode as basically visual, perceptual, and global. Bibliography Edwards' major publications include: See also Dual-coding theory Functional specialization (brain) Lateralization of brain function Roger Sperry Split-brain References External links Official website 1926 births Living people Artists from California American women illustrators American illustrators American art educators 21st-century American women