Dr. Gitte Lindgaard

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Dr. Gitte Lindgaard

• HOTLab
• (Human Oriented Technology Lab)
• Carleton University

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Usability

• How can we ensure that users can locate the
  information they need
• How should the information be presented to help
  them interpret it correctly.
• And then perform the correct action

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• Invalid data - out of range
• Longjmp botch core dumped

Ok
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• Error in OR1187.5K/2.3
• Closing application now

Ok
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• Provides education brings the learning
  environment to students
• Developed by researchers at Ryerson University, U
  of T and Telbotics.
• Designed to provide physical and social presence
  in the classroom for hospitalized children.
• Consists of classroom unit and remote unit.

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Classroom Unit

• Transmits live audio and video from hospital or
  home.
• Monitor shows childs face.
• Head turns, hand waves, can be moved around
  manually.

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Remote Unit

• In hospital or home
• Transmits live video and audio from classroom
• Child sees classmates on monitor
• Gamepad controls classroom unit
• Camera functions (zoom)
• Head movements (pan)
• Hand movements (arm)

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Good design
Bad design
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• OEO50I INIT ENTRY ANDREW MEDICI
• I11489 SERV _______ EXT _________ EE
  _____
• TPIS/2 ORDER SE ENTRY
• EXCH ACT J EXCH CODE ______ INPLACE
  _________ IP DATE ______
• EXCH RMK ________________________________________
  ____________________________
• SERVICE NAME ____________________________________
  ____________________________
• ADD ADDR INFO ___________________________________
  ____________________________
• SUB ADDR TYPE ______________________________ SUB
  ADDR ____________________
• STREETSFX _______ ________ NAME
  ____________________ TP/SFX ______________
• LOCALITY __________________________ POSTCODE
  ________
• FLT CLR PTY ___ TEMPORARY _ AL CONN
  _______ ROT CONN ___ PEXT? __
• LINE TYPE _____ NEXT FAC _ LN SEL __ ARE CODE
• REM/CCN(R/N) __ - SERV STATUS ___ DISC
  TYPE PAL _______
• RENTAL RATE ___ METER RATE ___ CONC AUTH
  _________ CAB ______
• ASIC _________
• DIRECTORY ACTION REQ (Y/N) _ DIRECTORIES-gt WH
  __ YE _ COM ___

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• OEO50I INIT ENTRY ANDREW MEDICI
• I11489 SERV _______ EXT _________ EE
  _____
• TPIS/2 ORDER SE ENTRY
• EXCH ACT J EXCH CODE PBX334 INPLACE 3374606
  IP DATE 04089996
• EXCH RMK N/A QREMM
• SERVICE NAMEPETER JAMES HOUSTON
• ADD ADDR INFO ROWANVILLE MELA
• SUB ADDR TYPE SEMI-ATT. DUAL H/H DWELLING
  SUB ADDR 337A
• STREETSFX CRESCENT NAME
  ST BARTHOLOMEW TP/SFX PMT/YY
• LOCALITY ROWANVILLE WEST POSTCODE 3957
• FLT CLR PTY ROP TEMPORARY N AL CONN
  P/T ROT CONN 3F PEXT? Y
• LINE TYPE PBX NEXT FAC N LN SEL PR ARE
  CODETTYP-M
• REM/CCN(R/N) 2X - SERV STATUS INP DISC
  TYPE PAL POTT/P
• RENTAL RATE RES METER RATE PM1 CONC AUTH MELA
  CAB 228FS/476PW
• ASIC 338PY
• DIRECTORY ACTION REQ (Y/N) N DIRECTORIES-gt WH
  N YE N COM PB

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• OE O50I INIT ENTRY ANDREW
  MEDICI
• I11489
• TPIS//2 T ORDER INDICATIVE DATA ENTRY
• INIT 4TB106 CURRENT DT 01090
• CUST A ACT OTHER SERV (Y/N) N
• BILL NAME _______________________________________
  _
• BILL ADDR _______________________________________
  _
• _____________________________________
  ___
• ______________________________
  __________
• COMMAND ____

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Web design

• How long does it take for you to decide you like
  or dislike what you see?
• Will you change your mind once you have decided?

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Perception
Decision making
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Not long ago (well, for some), this is how
computer screens looked
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Human Factors
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Study 1 Feature usage
What people want and claim to use
80
60
Mean
Want
40
estimate
Use
20
0
B
C
D
E
F
Experimental Group
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Study 1 Feature usage
Claimed versus actual usage (number of
facilities)
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Claim to use
9
8
Actually use
7
6
Mean no.
5
facilities
4
3
2
1
0
Group B
Group C
Group E
Group F
Experimental group
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Allows us to conclude

• Usage patterns do vary
• they do not depend on tech expertise
• People want more than they use
• but they cant always handle it all
• They overestimate their needs

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Note that

• People have unrealistic perceptions of
• their own habits and behaviour
• capabilities of products offered
• but they are not aware of discrepancies between
  perception and reality

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Come and see us
When Tuesday, Oct 15, 1200-200PM
Thursday, Oct 24, 1200-200PM Where SSRB
210 My email gitte_lindgaard_at_carleton.ca