Individual empathy emerges during infancy, and its development is influenced by family environmental factors such as parental characteristics and parenting style. In this study, we examined how maternal empathy was related to infant empathy and the mediating role of responsive parenting in this relationship using situational observation and scale measurement data. Thirty-three infants aged 11–30 months (M = 20.18, SD = 5.18) and their mothers (all from middle-income Chinese families) participated in simulated distress scenarios and structured mother–infant interaction sessions. These paradigms are widely used to study infant empathy and responsive parenting. The maternal empathy levels were measured using the Adult Empathy Scale (E-scale). The results indicate that (1) by their second year, infants largely acquire the capacity for other-oriented empathy and display significantly greater levels of empathy toward their mothers than toward strangers; (2) maternal empathy is significantly and positively correlated with responsive parenting and infant empathy, responsive parenting is significantly and positively correlated with infant empathy; and (3) responsive parenting fully mediates the effect of maternal empathy on infant empathy. These findings indicate that maternal empathy level can be enhanced to improve the quality of parent–child interaction, thereby promoting infant empathy development.

The development of children’s social function is influenced by the social environment, and children also play an active role in shaping and nurturing this environment. The present study investigated the potential reciprocal dynamic impact of mothers’ mental state talk (MST) and the development of theory of mind (ToM) in children. Using a cross-sectional design, we explored the development of ToM in 3- to 5-year-old children using an unexpected location task, an unexpected content task, an appearance–reality task, and mothers’ MST during mother–child reading. The results showed the following: (1) the mothers’ MST exhibited a shift from a predilection for subjective terms (such as desires) to a preference for objective terms (such as cognitions) as their children matured; (2) the development of the children’s ToM was closely related to their mothers’ MST. The overall MST scores, as well as the different categories and referents used in MST, were closely associated with the children’s ToM development. Notably, at the age of four, a critical period emerged where the correlation between maternal MST and ToM became significantly pronounced. These findings highlight the reciprocal nature of mother–child interactions as a two-way adaptive process.

Sharing with others is an important prosocial behavior, which is widely developed in early childhood. Numerous studies have demonstrated that single characteristics (routine behaviors or inter-group relations) of the recipient impact children’s sharing behavior. However, there is still a lack of understanding of the factors that influence sharing decisions in children with dual characteristics. In Experiment 1, 112 children aged 4–6 years (M_age = 5.55, girls account for 50%) participated in a sticker-sharing task, and the results indicated that older children (aged 5 and 6 years) were more willing to share and shared more stickers. Additionally, children shared more stickers with recipients who exhibited good routine behaviors compared to those who had poor behaviors. In total, 134 children aged 4–6 years (M_age = 5.47, girls account for 50.1%) participated in Experiment 2. The results indicated that children share more stickers with a friend than with a stranger. When recipients possessed dual characteristics, they shared more stickers with a stranger who had good routine behaviors than with a friend who had poor ones. Therefore, children are selective in their sharing, and when confronted with a recipient with dual characteristics, children prioritize the recipient’s prior performance of moral norms over interpersonal distance.