The people-prototype problem: understanding the interaction between prototype format and user group

When gathering feedback about an envisioned system, prototypes communicate design ideas to user groups. However, it is unclear how user responses are affected by prototype format. We conducted a 2x2 quasi-experiment (video /storyboard format x older and younger user groups) to test for an interaction between prototype format and user group. We found a significant interaction between prototype format and responses across user groups. Our results indicate that differences in user responses can be misinterpreted as the result of user group characteristics. We advise using multiple prototype formats to counteract a 'media effect'. Alternatively, we advise using storyboards for a smaller 'media effect'.

[1]  F. Craik,et al.  The attentional demands of encoding and retrieval in younger and older adults: 1. Evidence from divided attention costs. , 1998, Psychology and aging.

[2]  Elizabeth D. Mynatt,et al.  Digital Family Portrait Field Trial: Support for Aging in Place , 2005, CHI.

[3]  Bruce Tog Tognazzini,et al.  The “Starfire” video prototype project: a case history , 1994, CHI '94.

[4]  Kenneth R. Stern,et al.  Low vs. high-fidelity prototyping debate , 1996, INTR.

[5]  Youn-Kyung Lim,et al.  Comparative analysis of high- and low-fidelity prototypes for more valid usability evaluations of mobile devices , 2006, NordiCHI '06.

[6]  Shingo Uchihashi,et al.  An interactive comic book presentation for exploring video , 2000, CHI.

[7]  Manfred Tscheligi,et al.  Paper prototyping - what is it good for?: a comparison of paper- and computer-based low-fidelity prototyping , 2003, CHI Extended Abstracts.

[8]  T.M. Duffy,et al.  Scenario-Based Design: Envisioning Work and Technology in System Development [Book Review] , 1996, IEEE Transactions on Professional Communication.

[9]  Gregory D. Abowd,et al.  Storyboarding: an empirical determination of best practices and effective guidelines , 2006, DIS '06.

[10]  Neema Moraveji,et al.  Comicboarding: using comics as proxies for participatory design with children , 2007, CHI.

[11]  Abigail Sellen,et al.  Getting the right design and the design right , 2006, CHI.

[12]  Wendy E. Mackay,et al.  Video artifacts for design: bridging the Gap between abstraction and detail , 2000, DIS '00.

[13]  Jesse Hoey,et al.  The use of an intelligent prompting system for people with dementia , 2007, Interactions.

[14]  Erik Stolterman,et al.  The anatomy of prototypes: Prototypes as filters, prototypes as manifestations of design ideas , 2008, TCHI.