In this article, we review the previous findings on relationships between the ability of time perception and pathology of attention-deficit/hyperactivity disorder (ADHD). Time perception deficits are suggested to be the third neuropsychological pathway of ADHD. Even though it is well known that ADHD patients overestimate the time passed, these effects and related mechanisms on ADHD are still unclear according to the complexity of ADHD pathology. While the neural localization related to time perception and ADHD neural dysfunctions related to executive function and reward partially overlap, dysfunction peculiar to time perception is also observed. Furthermore, ADHD and the typical development group may have different relationships between task performance of time perception and executive function systems. In future studies, response for time perception tasks in individuals with ADHD should be examined closely in particular from the perspective of task characters and ADHD complexity.
