When identifying inverted faces, those showing stronger global precedence show a more prominent Those showing a stronger global precedence also have a greater deficit in identification abilities when the faces are inverted; their identification abilities decrease more from upright identification to inverted identification than weak global precedence individuals. This correlates to the theory that upright faces are processed holistically, or with a special mechanism. Those with stronger global precedence should perform better at holistically processing a face upright. Stronger global precedence should show a greater decrease in accuracy of identification of inverted faces because the task relies on local processing. Individual characteristics The degree of global precedence one demonstrates has been found to differ in relation to the variable of an individual's field dependence. Field dependency is the amount that one relies on Gestalt laws of perceptual organization. High field dependency corresponds to a greater bias toward the global level, while field independence corresponds to a lesser dependency on the global level. This indicates that individual characteristics have an effect on the prevalence of global precedence and that global and local processing exist on a continuum. Physiological explanation Neuropsychological evidence based on PET scans suggests that the global aspect of visual situations activates and is processed preferentially by the right hemisphere, whereas the local aspect of visual situations activates and is processed preferentially by the left hemisphere. The classical view of Gestalt psychology also suggests the right hemisphere is involved in the perception of wholes and thus plays a stronger role in global processing, whereas the left hemisphere involves separate local elements and therefore plays a stronger role in local processing. However, hemispheric specialization is relative because it depends on the experimental setting as well as the individual’s “attentional set.” In addition, stimulus type may influence the neural structures underlying hemispheric specialization. Global processing is the default strategy for most individuals, but local stimuli are often more perceptually demanding to recognize and identify, showing the effect of stimuli on visual processing. Disorders The Navon figure has been used in relating theories regarding processing to assessing cognitive learning disabilities, such as developmental dyslexia, dyscalculia, obsessive-compulsive personality disorder, and autism. Dyslexia When given a Navon figure test, people with dyslexia have difficulty automatically identifying graphemes with phonemes, but not with identifying numbers with magnitudes. On the other hand, people with dyscalculia have difficulty automatically identifying numbers with magnitudes, but not letters and