Research Findings: In order to examine the explanatory power of behavioral self-regulation in the domain of emotion knowledge, especially in a non-U.S. culture, 365 German 4- and 5-year-olds were individually tested on these constructs. Path analyses revealed that children’s behavioral self-regulation explained their emotion knowledge in the context of the less instructionally oriented German kindergarten, much like in the United States. In addition, behavioral self-regulation contributed uniquely to the explanation of German children’s emotion knowledge, even when language skills and a measure of verbal conflict inhibition as known predictors of emotion knowledge were included as covariates. The path model for the 4-year-olds underlined the importance of behavioral self-regulation and showed less integration among verbal conflict inhibition, language skills, and emotion knowledge than that for the 5-year-olds. Practice or Policy: Results underline the importance of self-regulation for young children’s learning about emotions in all cultures, alone and in tandem with receptive language skills and abilities for (verbal) inhibition.

Because emotion knowledge and language skills each contribute to children's success in school and life, the Feeling Thinking Talking (FTT) intervention combines the advancement of language skills and of emotion knowledge in teachers’ child‐directed conversations. Teachers from centers of early childhood education in Germany were taught language support strategies (LSS) and how to apply them during emotion talk while reading picture books, while reminiscing about emotional events, and in everyday conversations with the children in their care. The evaluation of the FTT intervention entailed a comparison between the FTT group (N = 43) and a business‐as‐usual (BAU) control group (N = 67) with N = 110 children (M_age = 49.41 months, range = 33–66 months at T1) who were individually tested using objective tests on receptive vocabulary and emotion knowledge before (T1) and after the FTT intervention (T2), and in a follow‐up 3–6 months later (T3). After a multiple imputation procedure, mixed multilevel models indicated that the children taught by the FTT group teachers made faster progress in their emotion knowledge than their agemates in the BAU condition, especially in their knowledge of mixed emotions, when numerous covariates were controlled. Results suggest that young children's emotion knowledge can be promoted alongside with language skills by a teacher‐led intervention supporting child‐directed emotion talk in early childhood education. Discussion focuses on emotion talk as the mechanism for the transmission of emotion knowledge.