The continuous impact of cognitive flexibility on the development of emotion understanding in children aged 4 and 5 years: A longitudinal study

The current study investigated the impact of cognitive flexibility on the development of emotion understanding using a longitudinal tracking study. A total of 98 children aged 4 and 5 years were tested for cognitive flexibility, emotion understanding, and verbal ability across three time points within a year. The cross-lagged analyses indicated that early cognitive flexibility played a predictive role in the development of emotion understanding. More precisely, cognitive flexibility at Time 1 predicted emotion understanding at Time 2 and Time 3, and cognitive flexibility at Time 2 predicted emotion understanding at Time 3. Furthermore, mediation analysis showed that verbal ability mediated the impact of cognitive flexibility on emotion understanding. Early cognitive flexibility contributed to later emotion understanding by improving children's verbal ability. These findings suggest that there is a verbal ability-mediated pathway from cognitive flexibility to emotion understanding that provides a new perspective for the development mechanism of children's emotion understanding. (C) 2020 Elsevier Inc. All rights reserved.