I think there are gender differences, at least during childhood because in general girls have better language skills than boys. I do not know why but I think may be because girls like to play with dolls and kitchen toys and talk a lot during them. Boys are good at kicking, running and breaking things!! So girls spend much time talking than boys. Maybe due genes!!
For adulthood, I think yes women like to talk a lot. It is very common in my country that women talk a lot especially at phone. So, it is cultural + genes
