P1198: Software for tracing decision behavior in lending to small businesses

This paper describes a process-tracing software program specially designed to capture decision behavior in lending to small businesses. The source code was written in Lotus Notes. The software runs in a Web browser and consists of two interacting systems: a database and a user interface. The database includes three realistic loan applications. The user interface consists of different but interacting screens that enable the participant to operate the software. Log files registerthe decision behavior of the participant. An empirical example is presented in order to show the software’s potential in providing insights into judgment and decision making. The implications of the software are discussed.     

The andrew system: The role of human interface guidelines in the design of multimedia applications

As computer systems are becoming more advanced, the user interface issues involved in system design are increasing in complexity. Multimedia applications add yet another layer of complexity to this already intricate task and guidelines are needed to help ensure consistency, both within a given computer system as well as across systems. The Human Factors Design Group of the Information Technology Center (ITC) at Carnegie Mellon University has developed a set of user interface guidelines for the Andrew system. These guidelines are intended to assist application developers, both within the ITC and externally, in creating application programs whose interfaces are consistent with the look and feel of Andrew. The ITC is a joint venture between IBM and Carnegie Mellon University. This work would not have been possible without the support of these organizations.     

Problems in evaluating the real-world usability of digital voice communication systems

Digital voice communication systems are being used in a wide variety of applications. Human observers are used to measure the performance of computer voice systems. We also need to determine how losses in speech quality and intelligibility affect the performance of the communicator. This paper considers several situational variables that can affect the usability and acceptance of digital voice communication systems: task constraints, user experience, and communication environment. User experience and communication environment influence the acceptability of degraded voice systems; greater experience and field environments lead to higher acceptability ratings. However, performance measures, such as task completion time, are still adversely affected by lower voice quality.     

A system for tracking gaze on handheld devices

Many of the current gaze-tracking systems require that a subject’s head be stabilized and that the interface be fixed to a table. This article describes a prototype system for tracking gaze on the screen of mobile, handheld devices. The proposed system frees the user and the interface from previous constraints, allowing natural freedom of movement within the operational envelope of the system. The method is software-based, and integrates a commercial eye-tracking device (EyeLink I) with a magnetic positional tracking device (Polhemus FASTRAK). The evaluation of the system shows that it is capable of producing valid data with adequate accuracy.     

AppMonitor: A tool for recording user actions in unmodified Windows applications

This article describes AppMonitor, a Microsoft Windows-based client-side logging tool that records user actions in unmodified Windows applications. AppMonitor allows researchers to gain insights into many facets of interface interaction such as command use frequency, behavioral patterns prior to or following command use, and methods of navigating through systems and data sets. AppMonitor uses the Windows SDK libraries to monitor both low-level interactions, such as "left mouse button pressed" and "Ctrl-F pressed," as well as high-level "logical" actions, such as menu selections and scrollbar manipulations. The events recorded are configurable, allowing researchers to perform broad or targeted studies. No user input is required to manage logging, allowing participants to seamlessly conduct everyday work while their actions are monitored. The system currently supports logging in Microsoft Word and Adobe Reader; however, it could be extended for use with any Microsoft Windows-based application. To support other researchers wishing to create multilevel event loggers, we describe AppMonitor's underlying architecture and implementation, and provide a brief example of the data generated during our 4-month trial with six users.     

The end of drugging children: toward the genealogy of the ADHD subject

This genealogy of the ADHD subject will demonstrate that over the course of the twentieth century a new relation between power, knowledge, the body, and ethical practices of self-formation emerged around the ADHD-type in ways that are not captured by the received critical perspective. By examining the history of knowledge and practices surrounding the ADHD-type, this work will argue that the deviant subject that was located relative to external institutional moral/juridical values or standards is replaced over the course of the century by a new intelligibility of rational self-management. A further analysis of this emergent intelligibility attempts to advance the critical understanding of the increasingly prevalent ADHD phenomenon by showing how novel drug and brain imaging technologies work to link behaviors to identity, establishing new relations of power to the subject not captured by the received medicalization perspective. This work will be of interest to anybody interested in the relations among knowledge, drugs, power, and the ADHD subject.     

The effects of gender differences on the usability of automotive on-board navigation systems – A comparison of 2D and 3D display

This study integrated gender with the user interface of automotive on-board navigation systems to analyze whether gender differences or 2D (2 dimensional) vs. 3D (3 dimensional) display affect the interface usability of an on-board car navigation system (CNS). An experimental design was adopted for collecting data from three tasks – locating points, planning routes, and searching polygons – each emphasizing a different aspect of way-finding. The participants reported their subjective usability via the System Usability Scale after each trial. Study results show that gender, the CNS interface the subject used, and a combination of both predict the usability of an on-board CNS. This study’s results provide a clearer understanding of whether manufacturers should develop interfaces that fit a CNS 2D or 3D display based on gender.     

Beyond the Tools of the Trade: Heidegger and the Intelligibility of Everyday Things

In everyday life, we constantly encounter and deal with useful things without pausing to inquire about the sources of their intelligibility. In Div. I of Being and Time, Heidegger undertakes just such an inquiry. According to a common reading of Heidegger's analysis, the intelligibility of our everyday encounters and dealings with useful things is ultimately constituted by practical self‐understandings (such as being a gardener, shoemaker, teacher, mother, musician, or philosopher). In this paper, I argue that while such practical self‐understandings may be sufficient to constitute the intelligibility of the tools and equipment specific to many practices, these “tools of the trade” are only a small portion of the things we encounter, use, and deal with on a daily basis. Practical self‐understandings cannot similarly account for the intelligibility of the more mundane things—like toothbrushes and sidewalks—used in everyday life. I consider whether an anonymous self‐understanding as “one,” “anyone,” or “no one in particular” —das Man—might play this intelligibility‐constituting role. In examining this possibility, another type of self‐understanding comes to light: cultural identities. I show that the cultural identities into which we are “thrown,” rather than practical identities or das Man, constitute the intelligibility of the abundance of mundane things that fill our everyday lives. Finally, I spell out how this finding bears on our understanding of Heidegger's notion of authenticity.     

Computer workstations: Explorations in human and machine cognition

Professional and scientific work will increasingly be conducted at computer workstations. An expert-system adaptive interface is one method for supporting learning and raising productivity of workstation activities. A prototype application for an adaptive interface is described in terms of machine intelligence, needs, design philosophy, and cognitive research. The intelligent interface prototype includes the operator’s psychometric profile, prior performance history, and a current keystroke performance stack within a conventional expert system. Productions in the form of conditionals between the operator’s keystrokes and three types of commands to the underlying software are described and illustrated. Commands entered, syntax errors, excessive repetition of keystrokes, and skill level are used to detect the user’s intentions and accordingly modify the display and command structure of the underlying software. Determining human intentions to produce machine adaptation to individual users is not a trivial task. Efforts to develop a powerful and general adaptive interface pose significant problems, and success cannot be assured without intensive cognitive research.     

Response to Hubert Dreyfus and Nancy Sherman

This paper tries to make clear what practical intelligibility is and how it is threatened at times of cultural breakdown or devastation. It argues that it is easy to overlook a breakdown in practical intelligibility because there is a tendency to frame the problems in terms of theoretical reason. Once one gets clear on what the threat to intelligibility is (and what it is not) one can see fairly straightforward ways to respond to the comments made by Dreyfus and Sherman.     

Test of Spanish sentences to measure speech intelligibility in noise conditions

This article describes the development of a test for measuring the intelligibility of speech in noise for the Spanish language, similar to the test developed by Kalikow, Stevens, and Elliot (Journal of the Acoustical Society of America, 5, 1337–1360, 1977) for the English language. The test consists of six forms, each comprising 25 high-predictability (HP) sentences and 25 low-predictability (LP) sentences. The sentences were used in a perceptual task to assess their intelligibility in babble noise across three different signal-to-noise ratio (SNR) conditions in a sample of 474 normal-hearing listeners. The results showed that the listeners obtained higher scores of intelligibility for HP sentences than for LP sentences, and the scores were lower for the higher SNRs, as was expected. The final six forms were equivalent in intelligibility and phonetic content.     

A human-centered approach for designing World-Wide Web browsers

Because the World-Wide Web has features that are not found in traditional information systems, it has some unique problems pertaining to human use, such as the difficulty of searching for specific information. This paper describes human cognitive limitations pertinent to the design of Web browsers and provides a conceptual model for human information processing on the Web. It also compares user strategies and use of browser functions for two tasks that differ in the specificity of the information that is to be retrieved. General principles and specific recommendations for the design of Web browsers are derived from these considerations.     

A Systems Approach to the Social Difficulties of Transsexuals in Hong Kong

This paper identifies social difficulties commonly faced by a group of forty-two Hong Kong transsexuals who had applied for sex reassignment surgery. It describes the use of a systems perspective to conceptualize their problems and a structural family therapy approach to social work intervention.     

HIV and AIDS and “family” counselling: A systems and developmental perspective

This paper describes first, a developmental and systems/interactional conceptual model for understanding HIV and AIDS and second, outlines four basic principles of a systems model of therapeutic counselling used with people infected and affected by HIV Clinical examples are taken from the work of a team of family therapists at Bouverie Family Therapy Centre in Melbourne, Australia, to demonstrate that a systems developmental model is an appropriate therapy to assist HIV and AIDS affected people and their significant others to live with a chronic and stigmatized terminal illness.     

The Expanding World of Edward Tronick

Edward Tronick operates at the interface of empirical analysis of mother–infant communication, systems theories, and psychoanalysis. He has been a leader in the articulation of the implications of systems views for child development research. Systems views of mother–infant interaction, and of development more broadly, increasingly provide one theoretical underpinning for psychoanalysis. His work has enriched our understanding of interactive models of the dyad, of development, and of the mind. He has made a pivotal contribution to the development of a relational systems approach to infant research and its implications for adult treatment.     

BEHAVE—An automated data analysis system for observed events

This paper first defines the context of automated data analysis systems and then mentions approaches to analysis of data by systems of this type. It then briefly describes the BEHAVE data structure and proceeds to a discussion of the BEHAVE data analysis package which provides the user with summary information concerning organization of data.     

Describing categories of objects for menu retrieval systems

When searching for information in menu-based retrieval systems, users are given a choice among a set of categories. Successful retrieval of information depends critically on the user’s understanding the system’s division of objects into categories and the system’s labels for these categories. This research compares several different ways of describing ill-defined categories of objects using combinations of names and examples. Examples provide a promising possibility, both as a means of flexibly naming new or difficult menu categories and as a methodological tool for studying certain categorization problems.     

External memory: High speed,low speed,and no speed

This paper describes potential constraints on the selection of external memory devices (stimulus sources) and suggests options available to the would-be user of such systems for estimating research requirements and the functional parameters of the available external memory devices.     

A conceptual framework for establishing trust in real world intelligent systems

Intelligent information systems that contain emergent elements often encounter trust problems because results do not get sufficiently explained and the procedure itself can not be fully retraced. This is caused by a control flow depending either on stochastic elements or on the structure and relevance of the input data. Trust in such algorithms can be established by letting users interact with the system so that they can explore results and find patterns that can be compared with their expected solution. Reflecting features and patterns of human understanding of a domain against algorithmic results can create awareness of such patterns and may increase the trust that a user has in the solution. If expectations are not met, close inspection can be used to decide whether a solution conforms to the expectations or whether it goes beyond the expected. By either accepting or rejecting a solution, the user’s set of expectations evolves and a learning process for the users is established. In this paper we present a conceptual framework that reflects and supports this process. The framework is the result of an analysis of two exemplary case studies from two different disciplines with information systems that assist experts in their complex tasks.