Princípios de usabilidade e design (2)
Autor: Heraldo Jr. | Publicado: 2010-11-19T11:47:00-08:00

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Os princípios de usabilidade também são chamados de heurística quando são utilizados como parte de uma avaliação.
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Os 10 princípios fundamentais de usabilidade são:
1.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Visibilidade do status do sistema: o sistema mantém os usuários informados sobre o que está acontecendo.2.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Compatibilidade do sistema com o mundo real: o sistema fala a linguagem do usuário ao em vez de termos orientados ao sistema.3.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Controle do usuário e liberdade: fornece maneiras de permitir que os usuários saiam facilmente de lugares inesperados em que se encontram.4.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Consistência e padrões: evita fazer com que usuários tenha que pensar se palavras, situações ou ações diferentes significam a mesma coisa.5.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ajuda os usuários a reconhecer, diagnosticar e recuperar-se de erros: utiliza linguagem simples para descrever a natureza do problema e sugere uma maneira de resolvê-lo 6.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Prevenção de erros: onde é possível, impede a ocorrência de erros7.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Reconhecimento em vez de memorização: torna objetos, ações e opções visíveis8.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Flexibilidade e eficiência de uso: fornece aceleradores invisíveis aos usuários inexperientes, os quais, no entanto, permitem aos mais experientes realizar tarefas com mais rapidez9.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Estética e design minimalista: evita o uso de informações irrelevantes ou raramente necessárias10.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ajuda e documentação: fornece informações que podem ser facilmente encontradas e ajuda mediante uma série de passos concretos que podem ser facilmente seguidos.


&nbsp;&nbsp;REFERÊNCIA: Preece, Jennifer&nbsp; Design  de interação: além da interação homem-computador / Jennifer Preece,  Yvonne Rogers e Helen Sharp; trad. Viviane Possamai.- Porto Alegre :  Bookman, 2005.