Here we examine age differences in theta oscillations for reward versus non-reward feedback from middle childhood through adolescence across three groups of children, 10-12 years, 13-14 years, and 15-17 years. To our knowledge there are no published studies examining oscillatory aspects of reward feedback processing in children or adolescents. In reward feedback studies with adults, researchers typically average across the 4-8 Hz frequency range relying on a preselected temporal window reflecting visual inspection of a time/frequency plot or the peak amplitude of the ERP. Importantly, these decisions regarding a preselected frequency range and time window in averaged data may obscure the actual frequencies, timing and potential markers of subcomponent processes that reflect age differences in reward processing. We address this issue directly with a fine-grained examination of the theta band, moment by moment over the course of reward feedback processing. To this end we examined EEG oscillatory activity at 0.5 Hz increments and 16 ms time windows, relying on false discovery rate (FDR) methods to control for multiple comparisons. We draw on work in the field of functional magnetic resonance
