UX-metoder som kompletterar användbarhetstest genom att mäta tillfredsställelse : En fallstudie för att validera identifierade metoder

Sammanfattning: This study has been carried out in collaboration with the company RISE and the group UX Insights, who works with methods to test a product’s usability and ergonomics. The purpose of the study was to find complementary UX methods for usability tests, and to test the methods for verifying whether the selected methods really generate complementary information, as it was requested by the UX Insights group. The goal was to identify three methods which could provide information about the user’s feelings, since emotions are linked to the factor satisfaction as opposed to usability tests that generate performance metrics. The goal was also to achieve a better product through tests and concept development, based on the selected methods, through a case study. The study was based on two research questions;RQ1. Which evaluation methods can be used to complement usability tests in work with UX and what supplementary information do the methods generate? RQ2. How can evaluation methods for UX be used in the product development process to effectively draw attention to emotional reactions in the interaction between product and human? To answer the research questions, a literature study and a case study were conducted. The literature study aimed at identifying complementary methods for usability testing, which resulted in the methods Emocards, semantic differential scale and interview. The identified methods wereused together with usability tests during two tests in the case study. Test one was carried out on two air conditioners that Electrolux assisted with, and test two was carried out on a concept of a new control panel that was developed after product development of the product that was in greatest need of improvement. The study resulted in a developed concept that generated better results from the tests, compared to the standard product. The concept received 18 percentage points higher effectiveness and an increase in efficiency as all tasks required at least 40 percentage points less effort. The movement in the circumplex model was 14 and 13 steps for the concept, compared to 32 and 15 steps for the standard product. The concept improved based on the semantic differential scale, where the average value decreased by 1.3 units. The result also showed that usability tests can be complemented by the methods Emocards, semantic differential scale and interview, which means that the whole aspect of UX is measured as the methods together generate both performance-based data and self-reporting data, which generates information on both performance and satisfaction. The conclusion of the study showed that all three complementary methods provided information that could be used in the development of the product in the case study. However, all three methods provided similar information and therefore do not need to be used together. For this reason, it is recommended to either complement usability tests with Emocards and interviews or with semantic differential scale and interview. This is because interviews can deepen the information that selected methods generates.