Before revision: Additionally, the field's emphasis has historically been close and intimate relationships, which includes predominantly dating married couples, parent-child relationships, and friendships & social networks, but some also study less salient social relationships such as colleagues and acquaintances.
After revision: andAdditionally, the field's emphasis has historically been close and intimate relationships, which includes predominantly dating married couples, parent-child relationships, and friendships & social networks, but some also study less salient social relationships such as colleagues and acquaintances.