Behavioral variability, elimination of responses, and delay-of-reinforcement gradients in SHR and WKY rats
Abstract Background Attention-deficit/hyperactivity disorder (ADHD) is characterized by a pattern of inattention, hyperactivity, and impulsivity that is cross-situational, persistent, and produces social and academic impairment.Research has shown that reinforcement processes are altered in ADHD.The dynamic developmental theory has suggested that a