Before usability CS 147: Intro to HCI Dan Maynes-Aminzade After 1 st Usability Review
Dec 19, 2015
Plans for Today
• Assignment 2 discussion in small groups
• Group discussion of lessons learned from Assignment 2
• Quick summary of project proposals + discussion
• Terminology recap
• Form groups for projects
Terminology of InteractiveSystem Design
• Affordances
• Constraints
• Conceptual Models
• Mappings
• Visibility
• Feedback
Usability Breakdown
• My action causes something I did not expect or want
• I want to do something, and cannot figure out how
Assignment 1 Grading Criteria
• Good– Chose an appropriate interactive interface, and
described its problems in terms of the principles in the readings
– Characterized the breakdown as described in the assignment: what was tried, what was expected, what happened
– Described the issue in specific terms, using terminology and principles from the readings
– Suggested an alternative design that solved the problem and described how it was better grounded in the general principles
Assignment 1 Grading Criteria
• Bad– Chose a technology problem rather than a design
problem (e.g. “system crashed” or “device was broken”)
– Copied one of the examples from the reading– Explained in vague terms (e.g. “design was bad”)– Didn’t offer an alternative design– Didn’t show evidence of doing the reading (didn’t use
the appropriate principles, or applied them incorrectly)