Direct Manipulation
–Creativity needed
–Clever designer creates visual
representation of domain using familiar conventions and
metaphors
–Desktop metaphor, CAD, video
games
Advantages
–Visual representation of task
concepts
–Easy learning and retention
–Errors avoided
–Encourages exploration
–High subjective
satisfaction
Disadvantages
–May be hard to conceive and/or
program
–Requires increased system resources (possibly)
è Good for Novices