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User Experience Innovation: User Centered Design that Works by Christian Kraft

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User Experience Curve

When using a product (or when purchasing a device, sending it for repair, etc.), you can try to imagine the feelings that the user will have in different situations. Positive feelings mean that the user experience curve goes up, Negative feelings mean that the curve goes down. If the curve goes down too much—or drops repeatedly during the process—you will most likely lose the customer even before purchasing; or the customer may end up being pretty unhappy most of the time using your product. And they will most likely not purchase a product from you again.

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1 ISO FDIS 9241-210:2009, Ergonomics of human system interaction - Part 210: Humancentered design for interactive systems (formerly known as 13407), International ...

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