describes the breadth, depth, and complexity of a person's thought world.

The personality trait "openness" is one of the characteristics of the Big Five or OCEAN model. It characterizes people who have an intellectual curiosity and feel the urge to gain experience and implement new ideas. Open-minded people like variety, often question the tried and true, and are interested in new things. They are inquisitive and have a strong imagination.

Their aspiration is to broaden their horizons at every available opportunity. Learning does not mean effort, but represents a fundamental need. As a result, they acquire a broad spectrum of knowledge that is not limited to a single subject area. They deal with a wide variety of topics, enjoy acquiring new skills and are open to new things - whether they are ideas or other people.