Seminar 2 MDI
Both chapters discussed different ways of gathering data about the users to improve ones interaction-product idea. Some methods didn’t include any data from the user.
Chapter 13, the complete proccess for planning and gather information about possible users, primarily with the DECIDE-framework. First, on has to determine the goals och the datagathering. It’s up to the developer to choose which methods to use, but he/she should have in mind that it influences the resultiong analysing. Secondly, the developer should think about is if the datagathering-method will give answers to what is questioned. The third step is to actually choose the method. The fourth is too critically analyse the result and see if it’s reliable. Fifth step is to discuss whether the proccess has been ethical. Finally you interpretate the data and do the final analysis. It’s important to know that you might have to go back and change different stages of the proccess and that other steps might be affected by this change. There are also different terms used to evaluate the different results, these are reliability, validity, ecological validity, biases and scope.
Chapter 15 was about methods do analyse interaction without involving any user. This could be used by pretending to be a user and structurally go through the technical device with a heuristic protocol as help. The protocol has several parts in which usability is deivided into. Therefore you can check which of these that the product satisfies.
Another method is to meassure very small subtasks, such as moving the cursor of the computer. Every small subtask is simplyfied to improve the experience doing the main task. There are also some formulas used to predict whether a task is easy to do, two examples of these are GOMS and KLM.
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