Under such a background, the present study tried to examine the relationship of friendship, peer acceptance and loneliness during middlechildhood.
在这种背景下，本研究试图考察童年中期友谊与同伴接纳、孤独感的关系。
2
Consequently, it is not only possible but also necessary to investigate the effects of aggressive behavior on peer relationships of Chinese children in middlechildhood.
因此，有必要对我国儿童的攻击行为对同伴关系的影响进行研究和探讨。
3
"Girls whose fathers were absent during their middlechildhood had significantly higher levels of emotional problems at school than girls whose fathers were present," says Pougnet.