Children involved in high-conflict divorce or custody cases can experience varying forms of psychological distress due to conflict between their parents. Legal professionals recognize that alienating behaviors are common in child custody cases, but are cautious about accepting the concept of parental alienation. Research shows that children can be affected 2–4 years before the separation or divorce even occurs. This can be due to parental conflict and anticipation of a divorce, and decreased parental contact. Many couples believe that by separating, or becoming legally divorced that they are helping their children, and in situations of extreme parental conflict or abuse it most likely will be beneficial. Exposure to marital conflict and instability, most often has negative consequences for children. Several mechanisms are likely to be responsible. First, observing overt conflict between parents is a direct stressor for children. Observational studies reveal that children react to inter-parental conflict with fear, anger, or the inhibition of normal behavior. Preschool children – who tend to be egocentric – may blame themselves for marital conflict, resulting in feelings of guilt and lowered self-esteem. Conflict between parents also tends to spill over and negatively affect the quality of parents' interactions with their children. Researchers found that the associations between marital conflict and children's externalizing and internalizing problems were largely mediated by parents' use of harsh punishment and parent–child conflict. Furthermore, modeling verbal or physical aggression, parents "teach" their children that disagreements are resolved through conflict rather than calm discussion. As a result, children may not learn the social skills (such as the ability to negotiate and reach compromises) that are necessary to form mutually rewarding relationships with peers. Girls and boys deal with divorce differently. For instance, girls who initially show signs of adapting well, later suffer from anxiety in romantic relationships with men. Studies also showed that girls who were separated from their fathers at a younger age tended to be angrier toward the situation as they aged. Anger and sadness were also observed as common feelings in adolescents who had experienced parental divorce. Academic and socioeconomic Frequently, children who have experienced a divorce have lower academic achievement than children from non-divorced families In a review of family and school factors related to adolescents' academic performance, it noted that a child from a divorced family is two times more likely to drop out of high school than a child from a non-divorced family. These