Consciously or not, research suggests, we come to see those who share our neighborhoods as one of our “in-groups,” and we may be influenced by the group’s values and routines or seek out places where people whom we believe are like us live. Some researchers believe they can predict a great deal about one’s personality simply by learning their ZIP code, due to the location’s ecological influences (the way they environment shapes psychological characteristics) and social influences (the way residents affect each other’s thoughts and attitudes as they interact). Selective migration, or one’s interest in living in, or moving to, places that suit their personality, also plays a key role in shaping community personality. For example, people who place a high value on social relationships tend to favor small towns, while people who value novelty and excitement may leave their small town to move to a big city as soon as they are old enough.