IntroductionMarital conflict has been highlighted as a form of stress that deserves particular consideration in the context of children's development (e.g., B arietta & O'Mara, 2006). However, there is increasing evidence from couple research that, rather than adverse interactions per se, the couple's capabilities to compensate negativity with positivity may be a stronger predictor of marital outcomes (Gottman, 1994). Remarkably, to the best of our knowledge, there is limited research investigating the meaning of Gottman's findings for children's well-being in the family context. The purpose of this survey study was to address this gap by examining the positive-to-negative ratio in parental interaction as a predictor of child adjustment.In recent decades couple research has been increasingly concerned with studying interaction patterns in marriages. It was shown that positivity and negativity in intimate relationships may not be considered as poles of one bipolar dimension but as two independent dimensions that constitute marital quality (Fincham & Finfield, 1997). According to this assumption, happy and unhappy couples do interact positively and negatively but, notably, in different proportions. Gottman and Fevenson (1992) 10.1111/fare.l2091reported that couples characterized by more negative than positive interactions (i.e., unregulated couples) were at greater risk to start the cascade toward divorce in comparison to regulated couples outperforming negativity by positive interaction. Additional studies based on observational data supported Gottman's (1993, 1994) balance theory of marriage that states that the equation of positivity to negativity is crucial to predict marital quality and stability, suggesting a ratio of about 5:1 in regulated couples. Holman and Jarvis (2003) found that Gottman's (1993) couple typology could be reliably verified in survey data too. Subsequently, European survey studies found a positive - negative ratio of about 2:1 in satisfied couples compared to unsatisfied couples or couples seeking for marital therapy yielding a ratio of smaller than 1 (Bertoni & Bodenmann, 2010; Bodenmann, Meyer, Binz, & Brunner, 2004).The ratio of a couple's positivity to negativity may also help to explain why the vast majority of children from conflictual homes do not develop psychological problems (Fincham & Osborne, 1993). The emotional security theory (EST; Davies & Cummings, 1994) supports the idea that the extent to which parental negativity is buffered by their positive interaction is critical for child adjustment. EST holds that parental discord harms children's development by undermining children's emotional security; that is, their primary goal of felt safety in the family and confidence in their parents' abilities to preserve family stability. However, the implications of negative parental interaction on a child's emotional security and welfare hinges on the quality of the broader parental and family functioning (Cummings & Davies, 2010). Supporting this hypothesis, Davies and colleagues (2002) found that interparental conflict was a weaker predictor of children's emotional insecurity and insecurity was less associated with children's psychological problems in families where parents scored high in emotional expressiveness. Parents' ability to discuss their emotions in a direct and constructive manner seemed to protect children from developing emotional insecurity and subsequent maladjustment in the face of parental conflict. In a similar vein, it was reported that family functioning provides a salient backdrop for children's reactivity to marital conflict (Davies, Cummings, & Winter, 2004). Children from cohesive families perceived simulated parental arguments as less threatening to their well-being than children from other (less functional) family profiles.It was also shown that the emotional climate in the family setting affects children's appraisals of interparental conflict. …