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DESIGNING WHAT                          TO DESIGN                        Jeff Johnson and Austin HendersonMonday, April 16...
A WORKBOOKMonday, April 16, 12
ASSUME YOU ARE           DESIGNING...       A Website.              ✱ breadcrumbs          ✱ support for                  ...
WHAT A CONCEPTUAL           MODEL IS...                a high-level description of how a system                is organize...
Monday, April 16, 12
WHAT A CONCEPTUAL           MODEL IS...                                                              ?                a hi...
WHAT A CONCEPTUAL           MODEL IS...            It specifies and describes                                             ...
TASK FOCUSED                Task-Focused: The more direct the mapping between the                system’s operation and th...
FINDINGSMonday, April 16, 12
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  1. 1. DESIGNING WHAT TO DESIGN Jeff Johnson and Austin HendersonMonday, April 16, 12
  2. 2. A WORKBOOKMonday, April 16, 12
  3. 3. ASSUME YOU ARE DESIGNING... A Website. ✱ breadcrumbs ✱ support for ✱ an application Is the site... for Web site discussion for creating navigation. Do grouped around newsletters. a) a collection of they show topics. Is Is a newsletter linked pages, or the structure a) the history of a) a list of items, b) a hierarchy of pages you have a) a set of or pages with some gone through threaded lists, crosslinks? to arrive here, or one for each b) a set of pages subject, or each with layout b) the place of of this page in the b) a set of items? hierarchy of postings each pages? with poten - tially related subjects? ✱ A platform for creating questionnaires. Is the questionnaire a) a linear list of questions, or b) a branching tree of questions?Monday, April 16, 12
  4. 4. WHAT A CONCEPTUAL MODEL IS... a high-level description of how a system is organized and operates. It specifies and describes ✱ the major design metaphors and analogies employed in the design, if any. ✱ the concepts the system exposes to users, including the task-domain data objects users create and manipulate, their attributes, and the operations that can be performed on them. ✱ the relationships between these concepts. ✱ the mappings between the concepts and the task-domain the system is designed to support.Monday, April 16, 12
  5. 5. Monday, April 16, 12
  6. 6. WHAT A CONCEPTUAL MODEL IS... ? a high-level description of how a system is organized and operates. It specifies and describes ✱ the major design metaphors and analogies employed in the design, if any. ✱ the concepts the system exposes to users, including the task-domain data objects users create and manipulate, their attributes, and the operations that can be performed on them. ✱ the relationships between these concepts. ✱ the mappings between the concepts and the task-domain the system is designed to support.Monday, April 16, 12
  7. 7. WHAT A CONCEPTUAL MODEL IS... It specifies and describes Lost ✱ the major design metaphors and analogies employed in the design, if any. • Looking up • Walking into information in a the office directory or book • Approaching • Going through a maze Help the help desk • Looking for a • Talking to an needle advisor in a haystack Questions AnswersMonday, April 16, 12
  8. 8. TASK FOCUSED Task-Focused: The more direct the mapping between the system’s operation and the task domain it serves, the greater the chances that the designers target conceptual model will be correctly reproduced and adopted by users. A web app without a task-based conceptual model: To log a week’s worth of hours consultants click on “Create Record” Why “Create Record,” rather than, LOG HOURS ?Monday, April 16, 12
  9. 9. FINDINGSMonday, April 16, 12
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