Download - User Acceptance
User Acceptance• The Technology Acceptance Model (TAM) is an [information systems]
theory that models how users come to accept and use a technology. The model suggests that when users are presented with a new software package, a number of factors influence their decision about how and when they will use it, notably:
– External Variables include system design characteristics, user characteristics (e.g., cognitive style and other personality variables), and task characteristics, nature of the development or implementation process, political influences, and organizational structure)
– Perceived usefulness (PU) - This was defined by Fred Davis as "the degree to which a person believes that using a particular system would enhance his or her job performance".
– Perceived ease-of-use (EOU) Davis defined this as "the degree to which a person believes that using a particular system would be free from effort".
User Acceptance cont.
• Theoretical user-acceptance curve
Usability
Performance / PU
Lo P, Hi U – e.g. pen
Hi P, Lo U – e.g. Tomahawk missile
DARPA does Hi-performance, but does not do usability so well
- Improving usability increases UA; therefore, improving usability can ease transitions
Human Factors
• Perspective– Examine usage scenarios and context of use
• Task analyses• SocioTechnical System analysis• User (military) input
• Inform design of technology• HF standards:
MIL-STD-1472E Department of Defense Design Criteria Standard: Human Engineering; MIL-H-46855B Department of Defense Handbook: Human Engineering Guidelines for Military Systems, Equipment, and Facilities; NASA-STD-3000, Man-Systems Integration Standards (MSIS); MIL-HDBK-759C, Department of Defense Handbook for Human Engineering Design Guidelines– All are general and need to be fit to a particular technology
DARPA
• Not program manager
• Close to SETA role
• Works with several programs
William [email protected]
• Education:– Ph.D., Industrial Engineering – Human Factors– M.S., Organizational Development and Knowledge Management– M.A., Philosophy – Computers and Cognitive Science
• Experience– Navy Acquisitions: NUWC, ONR, NRL, DARPA, ONR
• While at DARPA…– Supervisor: Dr. Tom Wagner– Supported Integrated Learning Program: Reviewed research proposals and
participated in Source Selection Committee– Supported COORDINATORS Program: Proposed usability tests; Proposed
interface design guidelines and prototypes; Served as Human Factors Monitor for the contract: “Human-machine Interfaces for Coordination Decision Support in Tactical Settings”
– Reviewed whitepapers emphasizing Human System Integration technologies from several sources at Office of Naval Research
– SBIR: Olfactory Cueing– AAAI SS06: Usability and HCI issues in planning and scheduling systems– Support Congressional Plus-Up through ONR as HMI consultant– DAWIA certification level 2
