In more recent studies, Marques and colleagues have shown that this occurs more strongly with regard to ingroup full members than other members. Whereas "new members" of a group must prove themselves to the full members to become accepted, full members have undergone socialization and are already accepted within the group. They have more privilege than newcomers but more responsibility to help the group achieve its goals. "Marginal members" were once full members but lost membership because they failed to live up to the group's expectations. They can rejoin the group if they go through re-socialization. Therefore, full members' behavior is paramount to define the ingroup's image.