An Exploratory Study of Usability Practice from
   User-Centered Design View: Meanings, Methods,
and the Current Situation...
Section 4 presents and discusses results of our preliminary finding, followed by
conclusions in Section 5.


2     Literat...
employees and employer), and then there are many dimensions of maturity (include
related knowledge, skills, methods, and r...
Company Commitment
                             1. organization awareness
                             2. commitment for d...
reality and provide abounding contextual information. Therefore, a semi-structure
in-depth interview was designed with pur...
Table. 1 Profile of respondents

           Professiona
                                               Job Function       ...
after their Web site went online. The participants with positive attitude of usability
tend to emphasize that their abilit...
organization, designer and user itself. Though major causes of this phenomenon
conform with abroad scholars’ presentation,...
5. Gould, J.D., Boies, S.J., Lewis, C., Making Usable, Useful, Productivity-enhancing
    Computer Applications, Communica...
27. Vredenburg, K., Isensee, S., & Righi, C.: User-centered Design: An Integrated Approach.
    Prentice Hall PTR., Upper ...
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An Exploratory Study of Usability Practice from User-Centered Design View: Meanings, Methods, and the Current Situation in Taiwan's Internet Industry.

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An Exploratory Study of Usability Practice from User-Centered Design View: Meanings, Methods, and the Current Situation in Taiwan's Internet Industry.

  1. 1. An Exploratory Study of Usability Practice from User-Centered Design View: Meanings, Methods, and the Current Situation in Taiwan's Internet Industry. Ruby Kuo1 and Jim Jiunde Lee2 1 Graduate Student, Institutes of Communication Studies, National Chiao Tung University, Taiwan, R.O.C. ruby_tw@yahoo.com 2 Assistant Professor, Institutes of Communication Studies, National Chiao Tung University, Taiwan, R.O.C. jiulee@mail.nctu.edu.tw Abstract. This paper intends to contribute as the first investigation of the Taiwan Internet Industry's adoption of the UCD approach. The results of an in-depth interview study give a thorough reflection of the reality – the UCD method, both in perception and in practice, come up short. Moreover, the study found that the most widely used methods of usability are interview, prototype, usability test, focus group and design guideline, but they are used in a fragmental, informal and summative manner. Some major factors that affect UCD implementation in Taiwan Internet industry are consistent with prior research, but some are not. 1 Introduction Despite the continuous effort and abundant results achieved by HCI researchers and professionals in the past two decades, poor usability remains a major problem for many commercial Web sites. Some research suggests that Web developers fail to recognize the importance of User-Centered Design (UCD) [1] and thus are unaware that better methods are needed to improve their design to engage their targeted audience [19, 26, 15-16]. Inspite of an increasing amount of research on UCD practice in many western countries, no paper examining this topic can be found in Taiwan. Therefore, this paper intends to be the first study investigating how the UCD approach has integrated into the Taiwan Internet industry. The major objectives of this study include: Firstly, present an outline of usability practice in the Taiwan internet industry. Secondly, compare with prior overseas research in order to discover the main restraint factors of UCD adoption in local organizations. Finally, future researchers can develop theories and methods to match the needs and thus increase their willingness to embrace usability in web design based on these findings. This article is organized as follows: In the second section, a thorough survey of related literature is conducted to clarify the boundaries of this topic. Most implication issues are then reviewed to develop a concept structure guiding this research. Section 3 describes the data collection method.
  2. 2. Section 4 presents and discusses results of our preliminary finding, followed by conclusions in Section 5. 2 Literature Review Here we concentrated on the practice level of Web Usability, especially from the view of UCD suggested as the answer for a web site's success by many intellectuals (e.g., [9, 14, 27]). Several studies have confirmed that there are many factors affecting the performance of UCD exercise in an organization. To provide a complete understanding, relevant issues will be discussed as below. 2.1 Overview of UCD UCD is becoming the prevailing paradigm of developing usable products [9]; its origin in the seminal work can be traced back to Norman and Draper, that claimed the designer must put their focus on human [21, 27]. Although the definition of UCD varied due to different researchers’ interest, they all emphasize the importance of placing the users in the center and actively involving them in all development processes [8, 17, 23, 27]. Moreover, UCD is about continuing interactivity with the future consumer to examine their need to direct design revision. A multi-disciplinary team cooperating with each other is also another essential character [9, 12]. 2.2 Key Success Factors of UCD Practice In short, maybe the idea of UCD is as simple as inviting the user to join a way of development. However, implications of this concept are surprisingly complex [3] and hard to perform in the field. Gould, Boies, & Lewis discover that those possible obstructions are coming from two dimensions – organizational and technical [5]. A follow-up article presents “the toolkit for strategic usability” to extend and interpret these problems, and consists of the organizational and methodological approaches, the organizational demographics (such as size of the company, size of the usability organization, or the type of company), and the frequency and effectiveness of this UCD method usage [22]. Some other research results show a similar suggestion: besides UCD infrastructure and effectiveness of UCD in development projects, the business management commitment is an important component, too [7-8]. Gould proposed four principles to assist a business to implement UCD, which includes: 1) Early-continual-focus on users, 2) Integrated design, 3) Early and continual user testing, and 4) Iterative design [4]. On the other hand, Vredenburg Isensee, & Righi concluded many guidelines from their study to raise desire and performance of UCD practice in the field. Some significant advice includes: review the status of organization and products to determine the start point for adopting UCD; acquire support from management level, every member in the development team agrees with UCD and has suitable knowledge, and the company commits to these activities… ,etc [27]. To put the matter more concretely, it is impossible to reach the goal of UCD adoption in one step [2. 13], because it usually starts with the recognition of demand (both
  3. 3. employees and employer), and then there are many dimensions of maturity (include related knowledge, skills, methods, and resource) that need time to advance. To illustrate how UCD is established in an organization, we made the summary by quoting from Venturi and Troost’s article as below: “when every phase of the product lifecycle follows the principles of User Centered Design, when UCD team is provided with the proper skills and experience, it is supported by the management commitment and a proper UCD infrastructure and when awareness and culture are properly disseminated in and out of the organization.” [25] 2.3 Related Research Since the end of the ’90s, several studies have focused on the status of UCD practice investigation. The contemporary importance of this concept is perceivable and it provides an opportunity of a reality check to reflect the need of HCI community [11]. Our study reviewed those crucial articles and found the earliest survey traced back to 1995. The researchers of this paper have learned that both usability and the usability specialist did not receive respect in companies at that time [20]. Later, a survey conducted by Rosenbaum and his colleagues discovered many meaningful issues. For example, resistance, lack of related understanding and ability to communicate cost-benefit effect of usability rather than the size of organization are more essential elements need to be considered carefully when UCD is adopted in any company [22]. Additional research conducted in other western countries have agreeable and analogous conclusions [6, 25]. In addition to this, the notice of cost-effectiveness also reflects its value on usability methods selected and applied. Most researchers agree that informal and discount methods are accepted widely [11, 25, 28]. The ratio of usability experts recruited in a production team is very low, and is far away from the 10% that scholars suggest [24]. Moreover, according the statistics of a study, 30% of respondents report that they taught themselves to attain knowledge of UCD [6]. In the end, unlike those papers giving a complete picture of UCD practice in IT industry mentioned above, Peissner & Röse focus specifically on the Web design industry in Germany. They have found that although 90% of their survey subjects considered usability as an important or very important issue of their work, just a minimum of companies treated it seriously and executed quality usability tests [18]. In other words, maybe organizations claimed that users participated in their design process, but there is a gap between theory and implementation resulting from the limitation on their ability and maturity of usability practiced in the organizations. 2.4 Concept structure of this research To sum up, organizations and methodologies are two influential components for usability embraced in business. However, as emphasized by Rosenbaum et al., the elements between each other are usually related and interplayed [22]. Therefore we will construct a research concept map (Figure 1) based on the conclusions of ISO 13407, Jokela & Abrahamsson, and Vredenburg et. al. to refine and determine vital factors of UCD practices. We will then use it to guide this study for data collection, analysis and discussion.
  4. 4. Company Commitment 1. organization awareness 2. commitment for development of UCD infrastructure 3. sets clear usability objectives 4. ensure the competitive performance level of UCD ability and infrastructure 5. size and type of company Resources 1. UCD Multidisciplinary Team infrastructure 1. all key skills must be represented 2. usability dept. on UCD team Design 2. team members must be able to Usability or specialist Life-Cycle Practice 3. plentiful budget understand one another Management 3. always aware of what everyone with and schedule 1. process UCD for user study else was doing 2. guideline 4. awareness about usability View 4. training and so 3. check-point on for UCD 5. respect of UCD work by project skill improving staff Active Involvement of Users 1. involves implementing a set of activities in whole process 2. starts with an understanding of the target and competitor 3. iterative design with user evaluation and validation 4. data gathered during lifecycle can be employed to improve the follow-on version of the product Fig. 1 Concept structure of Usability Practice with UCD View The diagram above thoroughly displays essential factors for UCD practice in a company, and represents their relations from left to right. The extreme left is the component “Resources”, which include infrastructure, specialist, ability for UCD activities, and its sufficiency is influenced by constituents of “Company Commitment”. It also affects the performance of the other two sections next to it, multidisciplinary-team and users participation. Those four components are interplaying and cycling in every step of product developments. Furthermore, the second component from the right is characterizing the nature of iterative design process called “Life-Cycle management”, and it contains processes, guidelines and check-points for project management assistance. Finally, with this combination working perfectly, the objective of UCD practice can then achieved. 3 Research Method Unlike relevant researches held aboard using survey with questionnaire, this study is based on our prior examination of the usability method usage in Taiwan Web design and purpose. Using the Qualitative method can picture the phenomenon reflecting
  5. 5. reality and provide abounding contextual information. Therefore, a semi-structure in-depth interview was designed with purposeful sampling strategies, data were then assembled from workers in Internet industry to share their real daily experiences. The study expected to get a throughout understanding of what is their perception and attitude in usability/UCD and how they apply it to their work. To obtain this goal, our research questions can be specifically listed as below: 1) How much are they concerned about users or usability, and do they have sufficient knowledge and capability? 2) What are the methods and techniques they used? 3) How do users participate in Web development? 4) What are the major factors that affect usability implementation and which of the UCD suggestions are actually fulfilled? To extend the coverage of samples and to improve richness of data, there are two purposeful sampling strategies selected: intensity sampling and maximum variation sampling. Between 2005/9/2 ~ 2005/9/27, we successfully invited 14 volunteers that conform to sample requirement to join this study through relationship network. Those subjects have a rich experience of web development, and their job functions cover all the major members of a regular web project development team including directors, project managers, web designers, programmers and usability specialists. Every interview took around 2 hours with tape recording, note taking and several printed forms to aid verification. After that and before result analysis, the Meaning Condensation techniques suggested by Kvale were also used to enhance the reliability of interviewees [10]. Next, data assessment and evaluation were conducted following the guideline of Qualitative study-reading conversation word for word, repeatedly and exhaustively, with an open-mind. Based on the objective of this paper, we search, refine and reduce meaning units of data for coding and classifying. Finally, the result is presented applying a categorization analysis method with a quantizing level consideration to recognize the implication of repeated patterns and concepts. 4 Results and Discussion 4.1 Respondents’ Profile Table 1 demonstrates the subjects’ profile, such as gender, professional experience, job function and education background. There is equal number of Female and Male coded with F01~F07 and M01~M07 for identification, and most of them have 6~10 years experience in Web design. In the whole, maybe the task division in the multi-disciplinary design teams in Taiwan is not as exquisite as their counter- parts overseas, and a dedicated usability specialist rarely exists in almost any business. Besides, as column two in the table shows, a member may need to cover several related functions. For example, a PM usually takes the whole responsibility of managing a project, but he or she also needs to put effort into planning jobs like Web service, structure, and flow design. Some of them even cover page layout or copy writing. Beyond that, this study also discovered that education background does not relate to their work, some interviewee report that they chose their job for interest, and they accumulate their competence by work experience and autodidacts.
  6. 6. Table. 1 Profile of respondents Professiona Job Function Education Background l experience Communication Management Construction Programmer Design/ Art mechanical Usability Designer Manger Planner under 6 History over10 6~10 HCI PM IT F01 F02 F03 F04 F05 F06 F07 M01 M02 M03 M04 M05 M06 M07 Additionally, we determined the size of those respondents’ companies by numbers of employees. There are four levels defined in this paper as: B (more than 150), M (61to149) , S (20~60) and SS (under 10), and the distribution of our samples in order are 33%, 17%, 33%, and 17%. 4.2 Usability Knowledge & Skills Through concrete realization and comparison of those subjects’ understanding, experience, recognition of UCD or usability and how they affect their daily work, we found that the degree of favor and perception will influence their concept on UCD. However, the experience of usabilty activity has no direct improvement on their UCD learning. Furthermore, even though there is no significant difference between individual education or job function, analysis based upon “job function” and “education” grouping showed subjects with designer or design training related jobs have better grades than others. Except for this finding, according to the total conceptions brought out by all respondents and their self-report of UCD knowledge and skill, and the way they acquire their knowledge and skill, this study has found: there is a serious shortage of UCD enlightenment and resource both in internal organization and external circumstance of Taiwan Internet industry. Most subjects’ related knowledge and skills are learned from experience, discussion with coworkers and users’ feedback
  7. 7. after their Web site went online. The participants with positive attitude of usability tend to emphasize that their ability and knowledge is insufficient and will seek additional resources and assistance. In contrast, the subjects with negative opinion or less understanding of UCD always stated their experience is sufficient, or their companies do not care about usability. 4.3 Web Design Method & UCD When asked to specify which design method was taken in his or her Web development, nearly every respondent’s description is linear procedure. Similar to foreign practice, those steps usually start with objective and requirement establishment, then progress from Web site structure defining to surface design, and go through varied tests that depends on organizational custom before official release and on-line operation. However, it is totally unlike UCD approach that emphasize on iterative aspect. Moreover, the pressure of deadline becomes a major factor for cost-benefit tradeoffs considerations. In other word, most subjects agree: usually their work is to satisfy business goals rather than users’. Some helpful method for accomplishing UCD product suggested by many studies like usability test and prototyping are seldom used. If they are used, it is only because it is required and the schedule permits. Such circumstances only occur in companies of size M and B. 4.4 How Users Are Involved This study has an interesting finding that user may have different meaning for different people or company and business needs always has higher priority over user needs. For example, when user is a specific person that is allowed direct contact (like a specific client), respondents usually rely on he or she to provide the details of user demand and spare the effort for finding it. However, in contrast to that, if user means mass audience that cannot be easily imaged, most respondents still state that they seldom conduct any activity to improve the understanding of users. In fact, as the data collected from this research shows, major methods used for estimate design to meet user desire are very different with the concept of UCD. The top 10 most-frequent activities in our result are presented from high to low, by their number of mention, as below: 1) discussion with team members, 2) comments from customer service dept., 3) log files analysis, 4) market survey, 5) data collected from campaign, 6) check-point for confirmation, 7) interview (including user and expert), 8) user profile description, 9) competitor analysis, 10) prototype and usability test. Only a few of them, such as no. 2, 5, 7 and 10, consider involvement of the real users. 4.5 Status of UCD Practiced Finally, in the light of this survey, it is proper to declare that usability practice in Taiwan Internet industry is at a primitive stage due to doubt of necessity. Compared to Nielsen's eight stages in practices of evolution model [13], half of the subjects consider "usability dose not matter", and the other 25% have "confidence in their general staff having enough ability for this issue". Only very few companies regard it as a serious mission and try to accomplish it with usability engineering or user research to improve design if schedule is possible. Compared with prior study, this result is conformable to the finding of a 1995 study[20]. Based on our data, we have found that lack of UCD awareness is visible in four levels: industry environment,
  8. 8. organization, designer and user itself. Though major causes of this phenomenon conform with abroad scholars’ presentation, a few of them haven’t appeared in past related studies, such as: local market scale is too small, local business usually have less motivation for RD, local users are unaware of their desire for better Web design, and the problem is not indefinable unless online, …etc. Another result of this study is “different companies may possess different levels of usability maturity” that confirmed Peissner & Röse’s result [18]. Besides, there is no direct evidence to prove that larger companies will give more respect of UCD. However, as our results show, only a few participants report their company will invite real users to join some design activities to correct or improve their design, and they are all working at size M and above companies. In short, there may be no direct correlation between company size and UCD adoptive, but it is true that only large-scale organization can offer applicable resources for usability participation. 5 Conclusion In summary, results of the study show that although interviewees claim they and their companies consider users as an important issue, most of them lack sufficient knowledge of usability. Furthermore, they do not have proper and systematic understanding of related topics of UCD, either. As the industry matures, most companies develop complete and similar design methodology, but a huge gap remains between their methods and the suggestions of UCD approach. This study also identifies some methods during the study, which include interview, prototype, usability test, focus group and design guideline. Though commonly mentioned by some participants, they are used in a fragmental, informal and summative manner. Consequently, this research makes clear that different companies may possess different levels of usability maturity, most of them still doubt the necessity of it in Taiwan. Moreover, compared with prior research conducted in western countries, though our result reflects most of their finding [6, 11, 18, 20, 22, 25, 28], one especially noteworthy result is that our portrayal of the perspective of UCD adoption in Taiwan Internet industry is more similar to the early circumstance that conclude by Rauch and Wilson in 1995. References 1. Cato, J.: User-centered Web Design. Pearson Education Limited, London (2001). 2. Ehrlich, K., & Rohn, J., Cost-justification of usability engineering: A vendor's perspective, in R. G. Bias & D. J. Mayhew (Eds.), Cost-justifying Usability. Academic Press, Boston, MA. (1994), 73-110. 3. Garrett, J. J.: The Elements of User Experience: User-centered Design for the Web. New Riders, Indianapolis, IN. (2003). 4. Gould, J. D., How to Design Usable Systems, in M. Helander (Eds.), Handbook of Human-computer Interaction. Amsterdam, North-Holland (1988), 757-789.
  9. 9. 5. Gould, J.D., Boies, S.J., Lewis, C., Making Usable, Useful, Productivity-enhancing Computer Applications, Communications of the ACM, 34, 1, (1991), 75-85. 6. Gulliksen, J., Boivie, I., Persson, J., Hektor, A., & Herulf, L., Making a Difference – A Survey of The Usability Profession in Sweden. The third Nordic conference on Human-computer interaction (NordiCHI '04), Tampere, Finland, (2004). 7. Jokela, T. and P. Abrahamsson,. Modelling Usability Capability - Introducing the Dimensions.The Second International Conference on Product Focused Software Process Improvement (PROFES 2000), Oulu, Finland, Springer-Verlag, (2000). 8. Jokela, T., Assessment of User-centred Design Processes as a Basis for Improvement Action, An Experimental Study in Industrial Settings (Acta Universitatis Ouluensis ed.), Oulu University Press, Oulu (2001). 9. Jarrett, C., Usability means user-centred design. The 48th Annual Conference of the Society for Technical Communication, Chicago, USA, (2001). 10. Kvale, S.: Interviews:An Introduction to Qualitative Research Interviewing. Sage Publications, Newbury Park, Calif (1997). 11. Mao, J.-Y., Vredenburg, K., Smith, P. W., & Carey, T., User-centered Design Methods in Practice: A Survey of The State of The Art. The 2001 conference of the Centre for Advanced Studies on Collaborative research, Toronto, Ontario, (2001). 12. Mao, J.-Y., Vredenburg, K., Smith, P. W., & Carey, T., The State of User-centered Design Practice. Communications of te ACM, 48, 3, (2005), 105-109. 13. Nielsen, J., Guerrilla HCI: Using Discount Usability Engineering to Penetrate the Intimidation Barrier, in R. G. Bias & D. J. Mayhew (Eds.), Cost-justifying Usability , Academic Press, Boston, MA (1994), 245-272. 14. Nielsen, J.: Designing Web Usability: The Practice of Simplicity. New Riders Publishing, Indianapolis, Indiana (2000). 15. Nielsen, J.: Alertbox: Ten years[online] (2005a). Retrieved 2005/12/8, from http://www.useit.com/alertbox/20050601.html 16. Nielsen, J.: Best of the Web/Online Extra[online] (2005b). Retrieved 2005/12/8, from http://www.businessweek.com/magazine/content/05_39/b3952418.htm 17. Pearrow, M.: Web Site Usability Handbook. Charles River Media Inc, Rochkand, MA (2000). 18. Peissner, M., & Röse, K.m Usability Engineering in Germany: Situation, Current Practice and Networking Strategies. The 1st European UPA conference on European usability professionals association conference, London, UK, (2002). 19. Powell, T. A., Jones, D. L., & Cutts, D. C.: Web Site Engineering: Beyond Web Page Design. Prentice-Hall, Inc., Upper Saddle River, NJ (1998) 20. Rauch, T., & Wilson, T., UPA and CHI Surveys on Usability Processes, SIGCHI Bulletin, 27, 3, (1995), 23-25. 21. Riva, G., Web Usability Revisited: A situated Approach, PsychNology Journal, 1, 1, (2002), 18-27. 22. Rosenbaum, S., Rohn, J. A., & Humburg, J., A Toolkit for Strategic Usability: Results from Workshops, Panels, and Surveys. The SIGCHI conference on Human factors in computing systems, The Hague, The Netherlands, (2000). 23. Rubin, J.: Handbook of Usability Testing: How to plan, Design, and Conduct Effective Tests. John Wiley & Sons, Inc., New York, NY (1994). 24. Schaffer, E.: Institutionalization of Usability: A Step-by-step Guide. Addison-Wesley, Redwood City, CA (2004). 25. Venturi, G., & Troost, J., Survey on The UCD Integration in The Industry. The third Nordic conference on Human-computer interaction, Tampere, Finland, (2004).. 26. Vora,P., Human Factors Methodology for Designing Web Sites, in: Forsythe, C., Grose, E., Ratner J. (Eds.), Human Factors and Web Development. Lawrence Erlbaum Associates, Mahwah, NJ (1998), 153–172.
  10. 10. 27. Vredenburg, K., Isensee, S., & Righi, C.: User-centered Design: An Integrated Approach. Prentice Hall PTR., Upper Saddle River, NJ (2002). 28. Vredenburg, K., Mao, J.-Y., Smith, P. W., & Carey, T., A Survey of User-centered Design Practice. The SIGCHI conference on Human factors in computing systems: Changing our world, changing ourselves, Minneapolis, Minnesota, USA, (2002).

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