Influences of social and non-social rewards on cognitive control in childhood

The modulation of cognitive control by rewards has long been discussed, but there is scarce evidence of how social and non-social rewards influence cognitive control in childhood, especially in the preschool years. Critically, sociality has often been confounded with other important reward dimensions (e.g., tangibility) in prior studies, hence potentially misestimating the effect of social rewards. Thus, the present study re-examined the effects of social and non-social rewards on cognitive control, particularly on proactive and reactive control engagement during childhood. Thirty 5- to 6-year-olds and thirty 9- to 10-year-olds completed an AX-Continuous Performance Task (AX-CPT) during an online session in three conditions: control, social reward, and non-social (i.e., monetary) reward conditions. Social rewards increased younger and older children's response accuracy, suggesting greater cognitive control. However, no influence on how children engage cognitive control (i.e., proactively or reactively) was observed. The provision of non-social rewards did not influence cognitive performance in either group of children. When controlling for other reward dimension, we found evidence that social rewards, but not non-social rewards, can promote cognitive control performance in childhood.