Interaction Design Qualities Johan Åberg Institutionen för datavetenskap 1 First Some Definitions • Design Values Values that stakeholders have that guide prioritization and selection • Design Qualities Characteristics of the design solution, in interaction design often referred to as experiential qualities or use-qualities • E.g. Togetherness, Surprise, Confusion, Flow, Effectiveness, Transparency • Design Quality An overall value judgment of a stakeholder in relation to an object, accompanied by an affective response and an assessment of level of quality or value 2 Design quality 3 Lowest Highest Lowest Highest Lowest Highest Lowest Highest Lowest Highest 4 Design quality Lowest 5 Highest 6 Design quality Lowest 7 Highest 8 Design quality Lowest 9 Highest 10 Design quality Lowest 11 Highest 12 Design quality Lowest 13 Highest Synthesis The Interaction Design Quality Prism Build quality Functionality Communicational Organizational Aesthetic Ethical 14 Rationale 1 • An awareness of different perspectives on interaction design productions allows: 15 • Teachers to show students different aspects of a product or service • Creatives to change perspective on their production and by that think through different aspects • Critics to change perspective on interaction design productions and by that give insightful critique • Project managers to staff projects and map competencies Rationale 2 • Perspectives on quality are assumptions that act as frames of reference, which can hinder people from taking advantage of available opportunities • Alternative reasoning provides a basis for reflection, which is a starting point for learning • Critical reflection can make you stop taking your assumptions as objective truth 16 THE INTERACTION DESIGN QUALITY INDICATOR 17 Aesthetics 18 Aspect Dimension Questions Aesthetic Form and material Are visual and physical form, behaviour, and material and media formats well chosen? ”Behaviour” refers to how a product or service responds to interaction. Character and innovation Does it have a unique and innovatory character and feel? Experience of activity Is the interaction and activity experienced in a reasonable, alluring and natural way? Think about several time frames: - wow-experience the first 10 seconds of the first impression - mmm-experience at a closer inspection the first 10 minutes - ahh-experience the first 10 weeks. 19 20 Aspect Dimension Questions Communication Symbolism and identity Are the operators presented in a desirable way, and is suitable symbolism used? Cooperation and coordination Does it support cooperation and coordination between the operators (both front-end towards end users, and back-end between internal operators)? 21 Aspect Dimension Questions Functionality Usefulness Is it useful for the user, with respect to its functions and content? Usability To what degree is it understandable, clear, easy to manage and to navigate? Aspect Dimension Questions Organisation Operations Is the division of labour in terms of leadership and maintenance well thought through, and is it cost effective and quality assured? This is a question of how a product or service is managed internally (back-end). Operations issues include further development, administration, documentation, rights, ownership, support, and relationships to related products and services. Business 22 How is the product/service adapted to the business, and what value does it add to the business? Aspect Dimension Questions Build quality Constraints Is the product/service realizable within a reasonable budget, time frame and with reasonable performance? Possibilities Does the product/service take current technical possibilities into account? Example: How does today’s TV:s make use of internet connectivity in terms of new functions and services? 23 24 Aspect Dimension Questions Ethics Habits What kind of behaviours is the product/service supporting, and what are the long-term consequences? Power What power structures does the product/service encourage between individuals, and between individual and organisation, or individual and the society? Norms Does the product/service strengthen or break norms and ideals in the society? Topics in Stakeholder Meetings Communicational Means & Value Perspectives Functionality Sketches Scenarios Computer prototypes 25 Organizational /communicational Aesthetic Build quality Ethical Product reaction cards 26 Evaluation method • Select a suitable number of visually loaded adjectives • Positive and negative • Write them on small cards • Let the user experience the product/service • Let the user select the cards that best fit his/her perception of the product/service • Interview user about selections • Summarize selection results 27 Healthy Guiding Reliable Inspiring Innovative Time saving Top 3 selection Personal Selected words Appetizing Environment friendly Cost saving 28 Exercise – perform interaction design quality analysis • Ryanair.com – Focus on organisation and aestethics • PlanEatSmile.com – Focus on ethics and aestethics • Facebook.com – Focus on communication and build quality • 1177.se – Focus on communication and functionality • Systembolaget.se – Focus on functionality and ethics 29 www.liu.se 30