Culture is learned, especially through the example of others’ actual behaviour in everyday life. The learning process continues throughout a person’s lifetime and can even include ways of expressing affection and sexual intimacy. For example, mouth to mouth kissing was traditionally absent from many cultures and is actually learned behaviour, not instinctive. Although the home is the primary agent of socialization for a child, the principle that culture is modelled, not taught, has relevance also for human interactions and leadership practices in business, politics and other organizations.