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Previous studies showed that attention system and its underlying neural mechanisms were profound affected by social inequalities. However, previous studies on social inequalities were mainly focused on family-based factors, such as parental education, parental occupation, and household income. In the present study, we investigated the neural mechanisms underlying more broader social context (e.g., rural verse urban) disparities in selective attention among young adults in China. Event-related potentials (ERPs) were recorded from 22 college students who had born and grown up in rural areas and 22 students who had born and grown up in urban areas during an auditory selective attention task. Although behavioral performance was not significantly different between groups, attentional differences in the negativity difference (Nd) were significantly larger in the urban group than the rural group. Whole sample analysis with hierarchical regression showed that rural/urban status still made a significant contribution to the prediction of Nd amplitudes even after the effects of age, sex, and various family SES measures (include parents’ educational levels and annual household income) were controlled for. These findings represent a first step toward understanding the ways in which broad social environmental factors shape the neural basis of selective attention.

Rural and urban disparities in selective attention in Chinese young adults: An event-related potential study