In individualist cultures, people put their own needs first, but in collectivist cultures, people put the needs of the group before their own, and often share things like possessions or childcare. Sagi et al compared attachments in infants who were raised in communal environments to those who were raised in family based environments. Closeness of attachment was 2x as common in family based environments. This suggests that the stages of attachment only applies to individualist cultures.