Product, Process, and Profit: The Politics of Usability in a Software Venture    

In research and in practice,usability specialists commonly target the technology user-interfaces and help as the main arena for bringing about usability improvements. However, usability improvements depend on more than innovative and user-centered technical designs and implementations. Equally important for creating useful and usable software are the social and political forces that shape the development context. These forces give rise to leadership conflicts, factional disputes, renegade efforts, alliances and betrayals, all of which profoundly influence whether usability improvements will be supported and sustained within and across projects. This essay presents and analyzes a case history of a software start-up company in which usability achieved a Pyrrhic victory, triumphing only in the short run because of social and political forces.

Mirel, Barbara E. Journal of Computer Documentation (2000). Articles>Usability>Programming

Social and Cognitive Effects of Professional Communication on Software Usability      

We designed and piloted a technical communication course for software engineering majors to take concurrently with their capstone project course in software design. In the pilot, one third of the capstone design course students jointly enrolled in the writing class. One goal of the collaborative courses was to use writing to improve the usability of students' software. We studied the effects of writing on students' user-centered beliefs and design practices and on the usability of their product, using surveys, document analyses, expert reviews, and user test results. When possible, we compared the usability processes and products of teams who did and did not take the writing class. Our findings suggest that the synergy of this interdisciplinary approach effectively sensitized students to user-centered design, instilled in them a commitment to it, and helped them develop usable products.

Mirel, Barbara E. and Leslie A. Olsen. Technical Communication Quarterly (1998). Design>Software>Usability>Rhetoric

A Study of Instructions for Information Systems: Variations on a Minimalist Theme  

To perform complex tasks, workplace computer users have to know how to control their programs and adapt program capabilities to the needs of their job goals and methods. I inquired into the instructional information that will help users learn such adaptive computing for complex data processing tasks by interviewing twelve experienced database users and analyzing twenty-five exchanges between experts and users on a database helpline network. Findings show that instructions may help users emulate expert approaches to adaptive computing for complex tasks by providing enough substantial technical information to help clarify task problems, goals, methods and analogies and presenting it in the form of rules of thumb, general procedures, and task-to-program explanations.

Mirel, Barbara E. STC Proceedings (1993). Articles>Documentation>Databases>Minimalism

Testing the Usability of Interactive Visualizations for Complex Problem-Solving: Findings Related to Improving Interfaces and Help    

In visual querying, users analyze data for their decisions and problems by interacting with graphics that are dynamic and linked. This querying paradigm is new, a dramatic break from the more familiar retrieving of data via search statements and displaying of it in static charts and graphs. For this new visual querying paradigm, analysts conceptually and operationally need to master new approaches. To discover salient relationships, they need to manipulate displays. To drill down for detail or causes, they have to select data of interest directly from a graph. And to draw inferences, they have to consider meanings across several dynamically linked graphics. With the aim of studying users success in these new approaches, particularly focusing on the approach of directly selecting data from graphs, I conducted a scenario-based usability test with 10 data analysts. They interacted with visualizations to complete a realistic complex analysis evaluating employee performance. Test findings reveal a range of difficulties in visual selection that, at times, gave rise to inaccurate selections, invalid conclusions, and misguided decisions. To overcome these difficulties, support for visual selection needs to be built into interfaces and help. Results and recommended improvements are presented.

Mirel, Barbara E. Journal of Technical Writing and Communication (2001). Articles>User Interface>Usability>Visual Rhetoric

Visualizations for Data Exploration and Analysis: A Critical Review of Usability Research    

Data visualization has the potential to change the questions that people are able to pose to their data and transform their analytical methods and decision-making processes. It may, in fact, be the next generation of data reporting tools. This article argues that the prevailing computer science orientation to data visualizations is severely limited for addressing many of the usability concerns associated with supporting users in three critical problem areas: sophisticated visual literacy, complex data analysis, and new paradigms of visual inquiry. I first describe what visualization technology is and what is uncharted about the three usability areas of perceptually rich, interactive displays; complex problem-solving; and visual querying. Then I explain what it means to take a computing -- specifically an object-oriented -- perspective on the usability of visualizations, emphasizing the limitations of this point of view when it comes to supporting users in complex activities and reasoning.

Mirel, Barbara E. Technical Communication Online (1998). Articles>Usability>Visual>Visual Rhetoric