 For example, when one makes interpersonal comparisons between oneself and other group-members, personal identity will become salient; instead, group identity will become salient in situations in which one’s group is compared to another group. Within a group, all those factors that lead members to categorize themselves as different (or endowed with special characteristics and traits) will enhance personal identity. If a group has to solve a common task, but each member is to be rewarded according to her contribution, personal abilities are highlighted and individuals will perceive themselves as unique and different from the rest of the group. Conversely, if all group-members are to equally share the reward for a jointly performed task, group identification will be enhanced. When the difference between self and fellow group-members is accentuated, we are likely to observe selfish motives and self-favoritism against other group-members. When instead group identification is enhanced, in-group favoritism against out-group members will be activated, as well as behavior contrary to self-interest.