Green with dampness. Red is the most active color, blue the most passive; green, in the middle, is the color of neutrality and calm, sometimes used in architecture and design for these reasons. Blue and green together symbolize harmony and balance. Green is often associated with jealousy and envy. The expression "green-eyed monster" was first used by William Shakespeare in Othello: "it is the green-eyed monster which doth mock the meat it feeds on." Shakespeare also used it in the Merchant of Venice, speaking of "green-eyed jealousy." Green today is not commonly associated in Europe and the United States with love
Jealousy feeling and displaying jealousy at as young as six months. Infants showed signs of distress when their mothers focused their attention on a lifelike doll. This research could explain why children and infants show distress when a sibling is born, creating the foundation for sibling rivalry. Anthropologists have claimed that jealousy varies across cultures. Cultural learning can influence the situations that trigger jealousy and the manner in which jealousy is expressed. Attitudes toward jealousy can also change within a culture over time. For example, attitudes toward jealousy changed substantially during the 1960s and 1970s in the United States. People in