Measuring user's emotional experience in two tools using an integrated method based on task analysis

Background and Objectives: Human factors are critical in the research and development of various products, but the wideness and unclarity of different aspects of these factors make it difficult to extract the demands of users. Studying emotional aspects of users' behavior with respect to products, as well as interviewing them, is considered an efficient tool for extracting design demands. Methods: This research has a descriptive/exploratory approach. In this practical study, the use of two everyday tools for chopping onions is analyzed. 20 users of these tools were non-randomly selected to participate in the test and interview. Users performed the task with each tool, and the process was captured by a camera. After performing the task, subjects completed a self-assessment method questionnaire, and then, an interview was conducted. A parametric t-test was used to evaluate the results of the questionnaire and compare averages. Results: findings of the emotional questionnaire showed that the emotional states of people in different stages of work are significantly different from each other. By analyzing videos, interviews, and surveys, users' demands were extracted. The extracted features were categorized based on the work steps. Conclusion: Using this method can reveal precise details of users’ needs concerning product categories, which can be used as a suitable tool for designers and researchers in the field of user experience.