barbara kok at wud16
TRANSCRIPT
Design process components and perceived product quality
Historically one of the priorities of design is to create a progression in the form of everyday experience (Beirne, 2011)
But…UsabilityUser experienceUser centred design Human centred designHuman FactorsErgonomicsParticipatory design…
bad user experience ?!
Exponential growth & increasing complexityof products
PhD research:
Design process components and perceived product quality
Relation design process and perceived product quality
WHAT HAPPENS IN A DESIGN PROCESS?
•
• Master Product Design education (LUCA School of Arts, Genk)• Bachelor & Master students
Research participants
9
What happens in a design process?
• State of the art
• Design shaping methods
• Ergonomic & functional study
• Users involvement
• Design research tools
State of the art
Component in the design process all productsre-designed
productsnew designed
products
State of the art
state of the art of similar products 100%
state of the art of not-relating products
65% 48% 77%
Technology, science(social science, etc.), materials etc. research:
desk research 60% 19% 91%
consulting specialists 45% 15% 69%
Design shaping methods
Component in the design process all productsre-designed
productsnew designed
products
Design shaping methods
sketching 94% 100% 89%
rendering (CAD…) 53% 41% 63%
tangible models 63% 82% 49%
Working model 47% 70% 29%
Ergonomic & functional study
Component in the design processall products
(62)re-designed
products (27)new designed products (35)
Ergonomic and functional study
consulting ergonomic guidelines 84% 93% 77%
product function and task analysis (FTA)
94% 96% 91%
product risk and mistake analysis (RMA)
66% 78% 57%
FTA & RMA by self-testing 44% 56% 34%
FTA & RMA designed product 61% 74% 51%
Users involvement Component in the design process all products
re-designed products
new designed products
Users involvement (UI)
questioning users 34% 30% 37%
questioning users' companion(s) 31% 26% 34%
observation 45% 48% 43%
feedback on concepts and/or models
feedback on concepts (2D) 24% 19% 29%
feedback on models (3D) 19% 19% 20%
feedback on working models 44% 70% 23%
Design research tools
Component in the design processall products
(62)re-designed
products (27)new designed products (35)
Design research tools
design research tools 40% 26% 51%
Design for people specific needs or disabilities
Component in the design process frequency
State of the art (STA)
state of the art of similar products 95%
state of the art of non-relating products 100% Technology, materials, etc. research 100%
Design shaping methods (DSM)
2D (sketching/rendering) 95%
tangible models 79%
Working model 68%
Ergonomic & functional study (EFS)
consulting ergonomic guidelines 90%
product function and task analysis (FTA) 90%
product risk and mistake analysis (RMA) 79%
FTA & RMA by self-testing 47%
FTA & RMA designed product 42%
Users involvement (UI)
questioning users 79%
observation 68%
feedback on concepts and/or models
feedback on concepts (2D) 37%
feedback on models (3D) 42%
feedback on working models 47%
Design research tools (DRT)
design research tools 21%
Student VS professional
Student VS professional• Differences cause by• Context • Experience • …
WHAT AFFECTS THE PERCEIVED PRODUCT QUALITY?AND WHAT CAN LEAD TO (ACCEPTANCE OF) INNOVATION
Research• Innovation is technology driven (Norman
& Verganti, 2014)• Innovation is created by creating new
meaning (Verganiti 2014)
• UX becomes important when people become more familiar (Norman & Verganti 2014)
Professionals (seat design)
• Importance of involving all stake holders including management an OEM
Effect of the design process components on the perceived product quality
Re-designPositive effect on the PPQ:• ‘function, risk and mistake analysis of
the designed product’
New designPositive effect on the PPQ:• ‘involving users by asking feedback
on 2D concepts’ • ‘applying design research tools in the
design process’
New designNegative effect on the PPQ:• ‘Consulting ergonomic guidelines’
Design for people with disabilities or special needs
Positive effect on the PPQ:• ‘design shaping by making (working)
models’• ‘functional, risk and mistake analysis’
(of the designed product)’ • ‘user feedback on (working) concepts
and models’
What about the other components?
No correlations because• Always applied• To moderate to measure• Interferences between components • Just no correlation
IMPORTANT DESIGN PROCESS COMPONENTS FOR CREATING COMFORT
CDP important for comfort (in seat design , based on professionals)
• prototyping• function, risk and mistake analysis
(of the designed product)• designing by making working models • focus groups • questioning users• Involving stakeholders
DESIGN VERSUS REAL WORLD
Can designers estimate the users perception of product quality?
DesignersVS users• Products for general target group:Strong correlation (= 0.743, p ≤ 0,000) between product assessment of designer and users
Designers VS usersProducts for people with specific needs or disabilities :no correlation (= 0.47, p = 0,066) between product assessment of designer and users
HOW TO INCREASE PERCEIVED PRODUCT QUALITY
Increasing perceived product quality by:
• Applying design process components which can have a positive effect on the perceived product quality
• Differentiate the design process in function of the design problem
Increasing perceived product quality by:
• Involving users in the design process and assessment
• Involve other stakeholders
Wanna know more…
Repository.tudelft.nlPhD B.N.E. Kok
OTHER RESEARCH AT LUCA SCHOOL OF ARTS C-MINE
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Traders
http://www.luca-arts.be/traders
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http://www.luca-arts.be/nieuws/keep-forget-andrea-wilkinson
Other • Participatory design with people with
dementia , sensory or cognitive disabilities
• Map-it• Empathy & communication media
design• …
Any questions?
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Thank you for your attention!
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