 Assuming associative duties are indeed irreducible to impartial duties, what is their ground? Most prominent families of accounts point to personal projects, to the value the relationship or the value of the person to whom the duty is being owed (for a recent critical discussion see Keller 2013). On the first kind of view, agents’ ground projects—that is, fundamental commitments that are closely connected to their practical identity—give rise to reasons (Williams 1981), and possibly duties, and some personal relationships are amongst these projects. According to another view, projects are not morally appropriate grounds for associative duties; rather, associative reasons respond to the value of the person with whom one has a personal relationship (Keller 2013). But strangers have the same moral value as our associates; this account will struggle to explain why we only have reasons of partiality towards those with whom we are in relationships. Finally, perhaps the most widespread family of views justifies associative duties as grounded in the non-instrumental value of relationships (Scheffler 2001; Seglow 2013), or in their final value (Kolodny 2003), or in their moral goodness (Jeske 2008). According to some philosophers, moreover, the value of some personal relationships is partly constituted by parties living up to their associative duties (Raz 1989; Brighouse &amp; Swift 2014). One version of this view, that is particularly interesting for this entry, is Jonathan Seglow’s appeal to relationship goods in order to justify associative duties (Seglow 2013). Seglow argues that the most plausible way of interpreting the claim that relationships generate duties on account of their value is to see how the relationships contribute to the flourishing of the people involved. And this, in turn, is best understood in terms of the goods uniquely made possible by relationships such as friendships, parent-child relationships and membership in various associations. According to Seglow, personal relationship goods are distinctive to these relationships: for instance parents and children owe each other love, co-citizens owe each other respect, etc.