A smile is a universal facial expression that communicates happiness. However, cultural norms influence how and when people smile. Western cultures typically smile more frequently in greetings and conversations compared to some Asian cultures. Russians generally do not smile without reason and see constant smiling as insincere. Germans also prefer to have a reason to smile rather than smiling without purpose. Thais use smiling to convey a wide range of emotions. Younger people and women tend to smile more cross-culturally than older individuals and men.