* Information processed by man: perception, cognition, signs, signals, symbols, hability, rules, knowledge;
* Mental models;
* Users profile: fisical caracteristics, psycological caracteristics, cognitive styles, knowledge and experience, environment influence;
* Hierarquical task analyses;
* Information architecture;
* User desorientation;
* User navigation and orientation;
* Information´s hierarchy and arborescence;
* Navigation help;
* User centered project: ergonomics recomendations;
* Error messages;
* Screen design: information quantity;
* Screen design: information grouping;
* Screen design: text presentation;
* Screen design: images, icons, graphics;
* Screen design: information`s distinction;
* Low-fidelity prototyping;
* E-comerce, e-learning and e-government;
* Intranets and dedicated websites. _
* Mental models;
* Users profile: fisical caracteristics, psycological caracteristics, cognitive styles, knowledge and experience, environment influence;
* Hierarquical task analyses;
* Information architecture;
* User desorientation;
* User navigation and orientation;
* Information´s hierarchy and arborescence;
* Navigation help;
* User centered project: ergonomics recomendations;
* Error messages;
* Screen design: information quantity;
* Screen design: information grouping;
* Screen design: text presentation;
* Screen design: images, icons, graphics;
* Screen design: information`s distinction;
* Low-fidelity prototyping;
* E-comerce, e-learning and e-government;
* Intranets and dedicated websites. _
