Presentation StylesPresentation StylesBalancing Function And Balancing Function And
FashionFashion
Ben Carson
Rajesh Golla
Sunil D’souza
IntroductionIntroduction
4 Design Issues4 Design Issues
Error messagesError messages Non anthropomorphic designNon anthropomorphic design Display designDisplay design ColorColor
Error MessagesError Messages
SpecificitySpecificity Constructive guidance & positive Constructive guidance & positive
tonetone User centered phrasingUser centered phrasing Physical formatPhysical format Effective messagesEffective messages
SpecificitySpecificity
POORPOOR
Syntax ErrorSyntax Error
Invalid DataInvalid Data
BETTERBETTER
Unmatched left parenthesisUnmatched left parenthesis
Days range from 1 to 31Days range from 1 to 31
Specific error messages instead of vague Specific error messages instead of vague condemning messagescondemning messages
Constructive guidance and Constructive guidance and positive tonepositive tone
POORPOOR
Disastrous string overflowDisastrous string overflow
BETTERBETTER
Use shorter strings or Use shorter strings or expand expand
string spacestring space
Help users to rectify mistakes rather than condemn themHelp users to rectify mistakes rather than condemn them
User centered phrasingUser centered phrasing
Give user the feeling that he controls the Give user the feeling that he controls the system rather than just responds to system rather than just responds to commandscommands
E.g. POOR BETTERE.g. POOR BETTER
Enter Data Ready For Enter Data Ready For DataData
Physical formatPhysical format
Upper-case only text v/s Mixed-caseUpper-case only text v/s Mixed-case
Placement : near the error v/s same Placement : near the error v/s same positionposition
Sound alerts – can be annoyingSound alerts – can be annoying
Develop better error messagesDevelop better error messages
Better wording - consult technical writersBetter wording - consult technical writers Quality Control - approval of expert committeesQuality Control - approval of expert committees Develop guidelinesDevelop guidelines
a) Positive tonea) Positive tone
b) Specificb) Specific
c) user centricc) user centric
d) neat comprehensible formatd) neat comprehensible format• Carry out usability testsCarry out usability tests• Collect user performance dataCollect user performance data
Non anthropomorphic DesignNon anthropomorphic Design
Failure of anthropomorphic designFailure of anthropomorphic design Ex: bank tellers: Tillie the teller and BOB, postal buddyEx: bank tellers: Tillie the teller and BOB, postal buddy Text only preferred over anthropomorphic designsText only preferred over anthropomorphic designs Anthropomorphic interfaces using first person pronouns Anthropomorphic interfaces using first person pronouns
may be counter productivemay be counter productive
Poor: I will begin the lesson when you press RETURNPoor: I will begin the lesson when you press RETURN
Better: You can begin the lesson by pressing RETURNBetter: You can begin the lesson by pressing RETURN
Better: To begin the lesson, press RETURNBetter: To begin the lesson, press RETURN
Display DesignDisplay Design
Display's key to successful designDisplay's key to successful design Smith and Mosier’s 162 guidelines of Smith and Mosier’s 162 guidelines of
data displaydata display Designers thorough knowledge of Designers thorough knowledge of
users tasksusers tasks Effective designs ( proper sequence, Effective designs ( proper sequence,
grouping, consistency, orderly format, grouping, consistency, orderly format, highlighting, shading, color, font etc)highlighting, shading, color, font etc)
Non anthropomorphic guidelinesNon anthropomorphic guidelines
Avoid presenting computers as peopleAvoid presenting computers as people Choose appropriate humans for introductions or Choose appropriate humans for introductions or
guidesguides Use caution in designing computer generated Use caution in designing computer generated
human faces or cartoon charactershuman faces or cartoon characters Use cartoon characters in gamesUse cartoon characters in games Design comprehensible, predictable, and Design comprehensible, predictable, and
controllable interfacescontrollable interfaces Provide user centered overviewsProvide user centered overviews Do not use “I” when computer responds to human Do not use “I” when computer responds to human
actionsactions Use “you” to guides users, or just state factsUse “you” to guides users, or just state facts
Six categories of principles which show Six categories of principles which show complexity of designers task complexity of designers task
1.1. Elegance and simplicityElegance and simplicity
2.2. Scale, contrast and proportionScale, contrast and proportion
3.3. Organization and visual structureOrganization and visual structure
4.4. Module and programModule and program
5.5. Image and representationImage and representation
6.6. StyleStyle
display complexity metricsdisplay complexity metrics
The four task independent metrics for The four task independent metrics for alphanumeric displaysalphanumeric displays
Overall densityOverall density Local densityLocal density GroupingGrouping Layout complexityLayout complexity
ColorColor
Use of color for a system is Use of color for a system is subjective.subjective. Some systems require colorSome systems require color Alphanumeric displays can be helped or Alphanumeric displays can be helped or
hurt by the use of colorhurt by the use of color
Guidelines for Using ColorGuidelines for Using Color
Use color conservativelyUse color conservatively Limit the number of colorsLimit the number of colors Recognize that color is a coding Recognize that color is a coding
techniquetechnique Color coding should support the taskColor coding should support the task Color coding appears with minimal inputColor coding appears with minimal input Color coding is under user controlColor coding is under user control Design for monochrome firstDesign for monochrome first Consider needs of color deficient usersConsider needs of color deficient users
More GuidelinesMore Guidelines
Color can help with formattingColor can help with formatting Use a consistent color schemeUse a consistent color scheme Be aware of common expectations Be aware of common expectations
about color codesabout color codes Be aware of problems with color Be aware of problems with color
pairingspairings Use color changes to indicate status Use color changes to indicate status
changeschanges Use color in graphic displays for greater Use color in graphic displays for greater
information densityinformation density
ConclusionConclusion
Hoadley, 1990 study of display Hoadley, 1990 study of display chartscharts ““uncritical addition of color may not be uncritical addition of color may not be
uniformly beneficial”uniformly beneficial” Color can improve some displays and Color can improve some displays and
lead to more efficient use of the lead to more efficient use of the system, but improper use of color system, but improper use of color can mislead and be can mislead and be counterproductivecounterproductive
Top Related