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It is a form of qualitative research consisting of interviews in which a group of people are asked about their perceptions, opinions, beliefs, and attitudes towards a product, service, concept, advertisement, idea, or packaging. Gauging opinions...

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The experience prototype is a simulation of the service experience that foresees some of its performances through the use of the specific physical touchpoints involved. The experience prototype allows designers to show and test the solution through a...

Scenarios describe the stories and context behind why a specific user or user group comes to your site.  They note the goals and questions to be achieved and sometimes define the possibilities of how the user(s) can achieve them on the site. A ...

The Pareto principle (also known as the 80/20 rule, the law of the vital few, or the principle of factor sparsity) states that, for many events, roughly 80% of the effects come from 20% of the causes. Management consultant Joseph M. Juran suggested t...

The cognitive walkthrough is a usability evaluation method in which one or more evaluators work through a series of tasks and ask a set of questions from the perspective of the user. The focus of the cognitive walkthrough is on understanding the syst...