They tend to be daydreamers. This is in stark contrast to the boys. Both genders have trouble learning the nuances of social interactions. Girls end up shy and withdrawn. They don't like the negative reactions they get when they don't clue in to the nuances.
Boys are more likely to proceed with social behavior that is considered inappropriate.
While they are bewildered when they get negative reactions, they continue. Both genders have problems in this area. But simply, girls are expected to be the organizers for themselves and others. While males are more likely to get this done for them, when they can't do it on their own. As these girls hit the teen years, the increased organizational demands of junior high and high school become too much.