 During childhood, personal relationship goods are instrumental to the good life of children in two ways: by allowing them to enjoy good health and pleasure during childhood and, due to their developmental role, by contributing to their future adult flourishing, including their future ability to relate to others (Vaillant 2012). Because of this double aspect, conflicts are in principle possible between allowing children to enjoy personal relationship goods in ways that maximize childhood wellbeing versus allowing them to enjoy these goods in ways that optimize the wellbeing of the future adult (Hannan 2018). For instance, it is possible that it is best for a child qua child to enjoy as much time as possible in playful interaction with loving adults, while for the future adult it may be more instrumentally valuable to use the time for honing competitive abilities. An interesting possibility, so far unexplored by normative theorists, is that personal relationship goods are also of developmental value for adults. Given that we are capable of some degree of psychological development throughout our lives—or, in neurobiological terms, some degree of brain plasticity—it is possible that enjoying the goods of personal relationships can help foster psychological development during adulthood. For the purpose of this section, the assumption is that the goods discussed below are of particularly high value to children thanks to their developmental role, and that childhood is a period of life which is developmentally special, thus requiring that we pay special attention to developmental goods.