Individuals who report high levels of affiliative humor are more likely to initiate friendships. A number of outcomes are associated with the use of affiliative humor. The frequency of other affiliative behaviors can be affected by age. Affiliative and self-enhancing humor are the two adaptive styles. The omega male was not a target of any affiliative interaction. These are also made during affiliative interactions, and approaches before grooming. These nonsexual affiliative friendships benefit both the male and female. Oxytocin promotes affiliative behavior, including maternal tending and social contact with peers. In contrast to grooming as appeasement, affiliative grooming is dependent on reciprocation. There are also affiliative behaviours which encourage stronger associations among individuals over time. The combination of these factors creates four distinct humor styles&colon; affiliative, self-enhancing, aggressive, and self-defeating. While interactions with smaller species are sometimes affiliative, they can also be hostile. The other form of grooming behavior among adult females is affiliative. However, unlike self-defeating humor, affiliative humor is not used at one's own expense. Vocalizations include an affiliative (friendly) call "krik", and a louder call resembling a crow's caw.