The emotional meaning of previous experienced events emerges from retrospection. Mother-child conversations are contexts in which emotional narratives are built and where children acquire emotional values or meanings. In this study explored gender differences for emotional words that mothers and their 48-month-old (averaged) children used to communicate regarding past experiences. Participants included 20 mother-son dyads and 20 mother-daughter dyads. Data were collected during home visits on conversations of shared previous events between mothers and their only child on four specific emotion experiences: happiness, anger, sadness, and fear. The results showed that there was no difference in the amount of the emotional words used between mothers and boys or mothers and girls in the conversations. Additionally, with sons, mothers tended to talk about happy experiences through questioning, but fearful experiences through clarifying and guiding manners. In contrast, with daughters, mothers were found to frequently use guiding manners to discuss sad experiences. Across genders, no difference was found on words used to talk about regulating negative emotions. Based on the results, we propose longitudinal monitoring of the socialization processes of emotion development, then analyzing the variation and elaboration of emotional word use between mothers and children in order to equate the emotion development between boys and girls and encourage conversations involving emotional experiences.