From SharpBrains: With a better understanding of the neurobiology of stress, the LD — ADHD — stress connection becomes clear. Students with learning disabilities or ADHD, confronted with the stress created by exposure to tasks that are in reality or in their perception too difficult (and thus threatening), exhibit the protective behavior of any organism under extreme stress: They fight, they flee, or they freeze. When these kids don’t understand why they can’t do what other kids can do (master the stressor), and they can’t see any way to get out of a situation that won’t go away, they begin to shut down. Trapped in this situation, from which there is no apparent exit, they may lash out with words or fists. They may tear up papers, throw books, or overturn desks. As much as they love their teacher, they may bite the hand that feeds them. If they override their impulse to act up or act out to escape the stress caused by a feeling of cognitive incompetence, these kids may freeze like the proverbial deer in the headlights.