This research examined the relationship among social withdrawal types,mutual friends,friendship quality and loneliness in middle childhood.

This article reviewed the studies of social withdrawal in childhood from the 1980s, including the concept, method, subtypes and relations between different subtype of social withdrawal and children抯 social adjustment.

The purpose of this study is to explore the developmental trends of the subtypes of social withdrawal from early to middle childhood.

Using the reversal design , this paper made a study of preschool children s behavior in order to research how to modify preschool children s social withdrawal by using preschool children s collective games designed by kindergarteners under the direction of researchers.

A case study of sport games modifing preschool children s social withdrawal behaviors;

The social withdrawal of child is stable at a degree,and could influence the child s development in different age and sex as well as under different cultural contexts.

As a kind of special behavior problem; social withdrawal has negative effects on children s later development in the long run.

But there are a part of children who are always away from peer, they are social withdrawal children.

Defects of social skills of children are classified i nto two kinds, that is, social retreating and social aggression.