Discusses theory of mental models--i.e., representations of relationships within a system which enable the user to produce mental simulations of the system's actions and develop ways of dealing with it--and its implications for user training, interface design, and overall systems design. (EJS)

Addresses the problems of unsuitable physical layout of the visual display terminal, keyboard, and document holder and improperly selected office furniture by discussing a group of office products dubbed "computer furniture," i.e., terminal tables and furniture for peripherals. Purchasing advice is included. (EJS)

Discussion of the problem of automation in the workplace with references to libraries focuses on the person/machine interface of visual display terminals (VDT). An argument is made for a human systems approach which integrates operator-user, VDT, work environment, work station, and task. Ergonomic recommendations for VDT use are made. (Author/EJS)

The basic objective of the development of man-machine interactive systems is to design a system that will most effectively take into account the limitations and talents of both man and machine, recognizing that the human factors are, in certain aspects, diametrically opposed to those of the computer. This document briefly investigates those…

Discusses aspects of microcomputer operation that are associated with the human operator and the interface between human and machine or workplace. Work productivity, furniture design (desks, seating), keyboards (shape, layout, and "feel" of keys), and video display terminal screens and lighting are noted. (EJS)

This essay and 48-item annotated bibliography provide information on potential problems of computer terminal use--cathode ray tube, video display unit, video display terminal--in libraries. Information on ergonomics (matching people to machines in humane way), eyes and vision, and radiation is included. (EJS)

This study tested the efficiency of two different body sites (the head and the left hand) for operation of a computer adaptive switch by an adolescent with spastic quadriplegic cerebral palsy. Data were collected during an assessment phase and a motor training phase. Results after analysis of the collected data were contradictory and inconclusive.…

Human factors engineering can be defined as the application of scientific principles, methods, and data drawn from a variety of disciplines to the development of engineering systems in which people play a significant role. Since human factors issues arise in every domain in which humans interact with the products of a technological society, six…

Different aspects of human-machine interaction are discussed in the five brief papers that comprise this report. The first paper, "Some Observations on Mental Models," discusses the role of a person's mental model in the interaction with systems. The second paper, "A Psychologist Views Human Processing: Human Errors and Other…

An attempt is made to provide a comprehensive guide to design of the dialogues between man and computer that take place at computer terminals. Particular topics include problems with conventional alphanumeric dialogues, dialogues with sound and graphics, pyschological characteristics of computer terminal users, problems of designing dialogues for…

Examines the typewriter keyboard--the major method of information entry for the computer--and describes efforts to rearrange keyboards to improve speed and ease of use. The Montgomery wipe-activated keyboard, based on the frequency of word use, is pictured and explained. (10662 Los Vaqueros Circle, Los Alamitos, CA 90720) (JJD)

Redesign of human-computer interface for users of computerized information systems can make substantial difference in training time, performance speed, error rates, and user satisfaction. Information and computer scientists are using controlled psychologically oriented experimentation, and evaluations during system development and active use to…

The model presented identifies three basic needs which must be met in order to increase our understanding of the user interface in computerized information systems: empirical studies of users' attitudes; systematic summaries and critical analyses of these studies; and an interim set of guidelines for user interface design. (EJS)

Discusses health hazards associated with use of visual display terminals (VDTs) and provides guidelines for safe use of VDTs in the following areas: radiation, design of work stations, design of VDTs, illumination, glare, work/rest periods, visual testings, ion depletion. An 11-item annotated bibliography of recommended readings and bibliographies…

This digest highlights several psychological dimensions of user-computer interfaces. First, the psychological theory behind interface design and the field of human-computer interaction (HCI) are discussed. Two psychological models, the information processing model of cognition and the mental model--both of which contribute to interface design--are…