 Sometimes the approaches may be combined. For instance Warren writes that young children and other non-paradigmatic humans have moral status for two sorts of reasons: “their rights are based not only on the value which they themselves place upon their lives and well-being, but also on the value which other human beings place on them.” (1992. 197) In addition to these three most common approaches, Mullin (2011) develops a fourth: some non-paradigmatic children (and adults) have moral status not simply because others value them but because they are themselves capable of being active participants in morally valuable relationships with others. These relationships express care for others beyond their serving as means for one’s own satisfaction. Approaches to moral status that emphasize children’s capacity to care for others in morally valuable relationships also raise interesting questions about children’s moral responsibilities within those relationships (see Mullin 2010). 