Scientific
Approach (beyond user friendly)
ZSpecify
users and tasks
ZPredict
and measure
]time to
learn
]speed of
performance
]rate of human
errors
]human retention
over time
ZAssess
subjective satisfaction (Questionnaire for
User
Interaction Satisfaction 7.0, www.lap.umd.edu/QUIS/index.html)
Interaction Satisfaction 7.0, www.lap.umd.edu/QUIS/index.html)
ZAccommodate
individual differences
ZConsider
social, organizational & cultural context
