Computer Science Department

Interaction Styles

Advantages	Disadvantages
Direct manipulation +visually presents task concepts +reduces syntax +allows easy learning +allows easy retention +allows errors to be avoided +encourages exploration +affords high subjective satisfaction	-maybe hard to program -requires graphical displays and pointing/selecting devices
Menu selection +shortens learning +reduces keystrokes +structures decision making +use of dialog-management tools +easy support of error handling +can guide through task	-presents danger of many menus -may slow frequent/expert users -consumes screen space -requires rapid display rate
Form fillin +simplifies data entry +requires modest training +gives convenient assistance +permits form-management tools	-consumes screen space -may require more computer skills
Command language +is flexible +appeals to power/expert users +supports user initiative +allows user-defined macros	-has poor error handling -substantial training and memorization
Natural language +relieves burden of learning syntax +spoken NL allows busy hands	-requires clarification dialog -may require more keystrokes -may not show context -is unpredictable due to ambiguity -spoken harmed by noise

Interaction-styles.html

dcb at cs wpi edu / Tue Jan 29 12:24:49 EST 2013