Objective: Performance validity assessments are relatively quick and easy to administer; however, current research is limited on the use of such tests in children. This research study aims to identify factors that contribute to poor performance on performance validity tests within a pediatric concussion population. Method: Participants included 32 children and adolescents (ages 8 to 16) who were referred for a neuropsychological assessment after diagnosis of concussion from a medical provider. Children with a premorbid history of a neurological disorder were not eligible to participate; however, children with a premorbid diagnosis ADHD, LD, mood, or anxiety disorder were included. In addition to the standard battery of cognitive measures and examination of emotional/behavioral adjustment, performance validity was evaluated using Green's Medical Symptom Validity Test (MSVT). Results: Within the sample, 7 patients failed the MSVT. Variability regarding gender, time since concussion, cause of injury, and performance on other measures of neuropsychological functioning were noted. Specifically, four females and three males demonstrated MSVT failures, and date of neuropsychological evaluation from the time of injury ranged from less than one month to over one year. Further results will be discussed in detail. Conclusion: While performance validity testing is an essential aspect of adult assessment, it is not routinely conducted in a pediatric population. The current study contributes to the established literature (Kirkwood et al., 2012), as it did not reveal any specific variable that identified individuals who failed the performance validity measure; as such, performance validity testing should be considered an important part of a pediatric neuropsychological evaluation.