The role of neuropsychological task performance in assessing Attention-Deficit/Hyperactivity Disease (ADHD) is still unclear, and the researches on whether tasks are valid for diagnosing the disorder are mixed. Nevertheless, regardless of their accuracy for diagnosing ADHD, neuropsychological tasks could provide crucial data to mental health professionals to inform treatment aims and modalities recommendations. For a study, the researchers wanted to compile all the available evidence on the use of neuropsychological task performance as a tool for informing treatment plans for ADHD kids. The emphasis of the peer-reviewed research was on the connections between task performance and academic, social, and health outcomes and treatment responsiveness. Nearly 25 investigations were discovered that used samples of kids diagnosed with ADHD in clinical, community, and school settings. The task performed by researchers helped to identify those with ADHD who were at risk of intellectual impairment. The research for identifying youth at risk for decreased social functioning or poor health outcomes, on the other hand, was less robust. The task performed by researchers was also likely to predict response to methylphenidate treatment. Evidence from multiple studies showed that reading task performance as a whole, such as a factor score or mean score, was more consistently beneficial for predicting desired outcomes than interpreting performance from a single task. The consequences of using functions in ADHD assessments were examined, and future approaches for investigating the clinical value of task performance were described. The research looked at the available information on the ability of neuropsychological task performance to influence treatment objectives or treatment responses in ADHD youth.