The Progressive Friends, also known as the Congregational Friends and the Friends of Human Progress, was a loose-knit group of dissidents who left the Hicksite branch of the Society of Friends (Quakers) in the mid-nineteenth century. The separation was caused by the determination of some Quakers to participate in the social reform movements of the day despite efforts by leading Quaker bodies to dissuade them from mixing with non-Quakers. These reformers were drawn especially to organizations that opposed slavery, but also to those that campaigned for women's rights. The new organizations were structured according to congregationalist polity, a type of organization that gives a large degree of autonomy to local congregations. They were organized on a local and regional basis without the presence of a national organization. They did not see themselves as creators of a new religious sect but of a reform movement that was open to people of all religious beliefs.