PART 1: USABILITY AND USER EXPERIENCE Usability refers to ensuring that interactive products are easy to learn, effective to use, and enjoyable from the user’s perspective. User experience refers to how a product behaves and is used by people in the real world. More specifically, it is about how people feel about a product and their pleasure and satisfaction when using it, looking at it, holding it, and opening or closing it. LIST OF USABILITY AND USER EXPERIENCE GOALS RELEVANT IN EVALUATING THE SMARTPHONE: Usability evaluation focuses on the realization of the task, i.e. it considers user performance while (she performs a particular activity, while user experience evaluation focuses on his/her experiences, emotions, perceptions and judgment in the evaluation of applications. Consequently, both are important for the evaluation of the quality of technological devices, especially for mobile device, since these devices have features that make the evaluation difficult. Usability goals Usability is broken down into the following six goals: Effectiveness:This is a general goal, and it refers to how good a product is at doing what it is supposed to do. Efficiency: It refers to the way a product supports users in carrying out their tasks. Safety: It involves protecting the user from dangerous conditions and undesirable situations. Utility: This refers to the extent to which the product provides the right kind of functionality so that users can do what they need or want to do. Learnability:This refers to how easy a system is to learn to use. Memorability: This refers to how easy a product is to remember how to use, once learned. User Experience Goals A diversity of user experience goals has been articulated in interaction design, which coverss a range of emotions and felt experiences. These include desirable and undesirable Desirable aspects Helpful Enjoyable Motivating Enhancing Entertaining creativity Supporting Entertaining Undesirable aspects Laziness Unpleasant Frustrating Making one feel guilty
