HUMAN-COMPUTER THIRD DIX FINLAY INTERACTION EDITION ABOWD BEALE chapter 9 evaluation techniques
chapter 9 evaluation techniques
HUMAN-COMPUTER NTERACTION Evaluation Techniques Evaluation tests usability and functionality of system occurs in laboratory field and or in collaboration with users evaluates both design and implementation should be considered at all stages in the design life cycle
Evaluation Techniques • Evaluation – tests usability and functionality of system – occurs in laboratory, field and/or in collaboration with users – evaluates both design and implementation – should be considered at all stages in the design life cycle
HUMAN-COMPUTER NTERACTION Goals of evaluation assess extent of system functionality o assess effect of interface on user identify specific problems
Goals of Evaluation • assess extent of system functionality • assess effect of interface on user • identify specific problems
HUMAN-COMPUTER NTERACTION Evaluating Designs Cognitive Walkthrough Heuristic Evaluation Review-based evaluation
Evaluating Designs Cognitive Walkthrough Heuristic Evaluation Review-based evaluation
HUMAN-COMPUTER NTERACTION Cognitive Walkthrough Proposed by polson et al evaluates design on how well it supports user in learning task usually performed by expert in cognitive psychology expert walks though design to identify potential problems using psychological principles forms used to guide analysis
Cognitive Walkthrough Proposed by Polson et al. – evaluates design on how well it supports user in learning task – usually performed by expert in cognitive psychology – expert ‘walks though’ design to identify potential problems using psychological principles – forms used to guide analysis