Most commonly, children are raised in the same culture, often even in the same town, as their parents. Increasingly, however, as people relocate their families for political or economic reasons, their children are exposed to a wider than usual range of cultural views and norms during a critical phase of childhood development. As they grow up, children in this situation blend the first culture that they learn from their parents with the second culture of their residential environment into a distinctive third culture, and so they are called 'third-culture kids'. While such children are often exposed to their parent's native language because it is spoken in the home, they frequently need to learn at least one second language for use in the wider community, for example, at school, in shops, or with their local carers. But the language barrier is just one of hundreds of challenges that third-culture kids face when navigating the strange and sometimes hostile environment of the local culture. They often struggle to feel a sense of belonging in the wider group—a critical factor for the psychological development of self-esteem in adolescents. Nevertheless, many young people are able to successfully adapt and end up thriving in both cultures, often demonstrating deeper interpersonal and cross-cultural sensitivity than their single-culture peers.