Attention problems relate to behavioral problems such as inattention, impulsivity and hyperactivity. ADHD is a neurodevelopmental disorder characterized by problems with inattention and/or hyperactivity-impulsivity. Attention deficit-hyperactivity disorder (ADHD) is a multiple component disorder involving inattention, impulsivity, and hyperactivity. In the DSM, ADHD is classified under two symptom categories, Inattention and Hyperactivity/Impulsivity. Many individuals with TS may also develop obsessions, compulsions, inattention and hyperactivity. Mothers who used marijuana during pregnancy have children with more depression, hyperactivity, and inattention. The neglect of input, or "inattention", includes ignoring contralesional sights, sounds, smells, or tactile stimuli. Ace becomes an addled mystic, losing new-found friends due to inattention and incompetence. Moderate drops in blood pressure can cause confusion/inattention, delirium, and episodes of ataxia. Cognitive psychologists have examined the relationship between working memory and inattention, but evidence is inconclusive. This allows for the selective attention or inattention towards various stimuli. Surprisingly, this inattention can even apply to imagined stimuli. Victoria's inattention to her duties provoked quarrels with Ernest. Victoria's inattention to her duties provoked quarrels with Ernst. Rumble strips only prevent ROR crashes due to inattention.