In regard to man's social needs - the need for contact with other people and the need for private space are somewhat contradictory and require careful balance. The focus on which visual information is required is determined by the activities and basic biological needs. Areas likely to provide significant information - on their own or by being highlighted - are perceived first. They attract our attention. The information content of a given object is responsible for its being selected as an object of perception. Importantly, the information content influences the way in which an object is perceived and evaluated.