Neurocognitive testing evaluates cognitive deficits commonly associated with addiction, such as impaired memory, attention, and executive functioning. Substance use often damages brain regions like the prefrontal cortex and hippocampus, leading to difficulties in decision-making, impulse control, and learning. Standardized tests, such as the Wisconsin Card Sorting Test and Stroop Test, help identify these impairments and guide personalized treatment plans. Neurocognitive assessments also aid in tracking recovery progress and predicting relapse risk. Integrating these evaluations into addiction care provides a comprehensive understanding of how substance use impacts brain function and highlights areas requiring cognitive rehabilitation.