Asking Users. Questionnaires as Indirect Observation Tools in Human-Centred Design Approach. Application Cases

Human-Centred Design (HCD) investigation and assessment methods record the user’s needs and satisfaction level and are widely used to evaluate usability and orientate design decision making.Questionnaires are among the most useful and popular observation tools to study users’ opinions using quantifiable and comparable data. Their drafting needs requirements and evaluations in order to use them efficiently. Therefore, this paper intends to provide designers and researchers with useful tips for designing these tools. For this reason, it describes features of method and systematizes instructions from the literature. It also shows application cases to exemplify the relationship between method and type of data collected and to explore impacts of using different types of questionnaires in design processes.