Recall that Sherif and his colleagues (1951) created conflict between two groups of boys in a summer camp. Once in-group cohesiveness was established, they set up a series of competitive situations such as tug-of-war and other competitive games. Conflict between the two groups escalated. Sherif and his colleagues were only successful in reducing conflict and hostility when

When they constructed relationships that fosters mutual independence

Explanation:

Sheriff and his colleagues were trying to establish the fat competition for scarce resources birth hostility and conflict amongst groups. He was able to establish this theory that carefully selecting 2 different groups with different individual characteristics and allowing each group to bond with one knowing that the other exists , after bonding , he set them against each other's in competition for a singular goal. As time goes on, that one team wins and the other loses, strife and contempt began to escalate within the groups and conflicts set in. To reduce this conflict that was brewing, Sheriff and his colleagues had to construct a relationship that fosters mutual independence whereby each individual exist without necessarily having to depend on the other.

just don't strip down in public lol