Attention-Deficit/Hyperactivity Disorder (ADHD) is typically conceptualized as a disorder of executive control; however, accumulating evidence suggests that early sensory processing may also be atypical. The present study examined contrast sensitivity (CS) and noise processing in a sample of 45 adults (21 with ADHD and 24 neurotypical controls). In Experiment 1, foveal CS was measured across spatial frequencies (4-12 cpd) using standard-size targets presented at stimulus durations of 40 and 80…
