Childhood psychological maltreatment and internet gaming addiction in Chinese adolescents: Mediation roles of maladaptive emotion regulation strategies and psychosocial problems.

Background: Internet gaming addiction (IGA) is a global concern, especially among young children. There have been some suggestions that childhood psychological maltreatment influences the development of IGA, but evidence for this has thus far been lacking.

Objective: The goal of this study was to investigate the association between childhood psychological maltreatment and IGA in adolescents and the mediation roles of maladaptive emotion regulation strategies and psychosocial problems (depression and social anxiety).

Bidirectional selection between two classes in complex social networks.

The bidirectional selection between two classes widely emerges in various social lives, such as commercial trading and mate choosing. Until now, the discussions on bidirectional selection in structured human society are quite limited. We demonstrated theoretically that the rate of successfully matching is affected greatly by individuals' neighborhoods in social networks, regardless of the type of networks.