RTS - Implementation ITV Real-Time Systems Anders P. Ravn Aalborg University February 2006.
Usability Problems Experienced by Seniors af Anders Bruun, Aalborg Universitet
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Transcript of Usability Problems Experienced by Seniors af Anders Bruun, Aalborg Universitet
USABILITY PROBLEMS EXPERIENCED BY SENIORS
DEPARTMENT OF COMPUTER SCIENCE
CENTRE FOR SOCIO INTERACTIVE DESIGN
ANDERS [email protected]
WWW.CS.AAU.DK/~BRUUN
CENTRE FOR SOCIO INTERACTIVE DESIGN
Usabi l i ty test ing of home heal thcare systems
Types of usabi l i ty problems exper ienced by seniorsB r u u n , A . a n d S t a g e , J . , 2 0 1 0 . U s a b i l i t y P r o b l e m s i n a H o m e Te l e m e d i c i n e S y s t e m . I n P r o c . H E A LT H I N F . I N S T I C C P r e s s ( 2 0 1 0 ) .
B r u u n , A . , H a h n , C . , Vo i g t , B . a n d S c h u l t z , M . D i g g i n g W i d e a n d N a r r o w : A n E x p l o r a t o r y S t u d y o f S e n i o r a n d Yo u n g e r U s e r s ’ S t r a t e g i e s f o r R e t r i e v i n g I n f o r m a t i o n f r o m a H e a l t h c a r e P o r t a l . I n P r o c . I C I C T H . I N E A G ( 2 0 1 2 ) .
Evaluat ion of usabi l i ty test ing methodsB r u u n , A . a n d S t a g e , J . E v a l u a t i n g t h e U s a b i l i t y o f H o m e H e a l t h c a r e A p p l i c a t i o n s . I n C a r s t e n R ö c k e r a n d M a r t i n a Z i e f l e ( E d s . ) , H u m a n C e n t e r e d D e s i g n o f E - H e a l t h Te c h n o l o g i e s . I G I G l o b a l ( 2 0 1 0 ) .
Previous Research
Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 2
D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y
Healthcare System Device (HCS)Targeted user group: E lder lyAutomat ic t ransfer o f data
Secondary devicesBlood pressure meterBlood sugar meterScaleInter faces: B luetooth, In f rared and ser ia l cable
Danish Study
Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 3
A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N
D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y
Y N
Web PortalTargeted user group: E lder lyAutomat ic t ransfer o f dataInteract ion through TV set
Secondary devicesBlood pressure meterBlood sugar meterScale
German Study
Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 4
A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N
D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y
Usabi l i ty Lab
Part ic ipantsDanish s tudy: 5 sen iors (mean = 67 years)German s tudy: 6 sen iors
6 younger (mean = 35 years)
ProcedureInd iv idua l task comple t ion
Data col lect ionVideo and aud io record ingsEvent logs
Data analysisVideo Based Ana lys is
Study Design
Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 5
A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N
D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y
Subject Room 1
SubjectRoom 2
Control Room
curtain
operator
Tasks
Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 6
A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N
D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y
Task # Task Description (Danish study / HCS device)
1 Connect and install the HCS and secondary devices
2 Transfer data from the blood sugar meter to the HCS. The blood sugar meter is connected using a cable.
3 Measure the weight and transfer data from the scale to the HCS.
4 A new wireless blood sugar meter is used. Transfer the data from this to the HCS.
5 Clean the equipment.
Task # Task Description (German study / Web Portal)
1 Log in
2 Change font size
3 Fix heating issues
4 Show vital data
5 Log out
Y N
No. of Identi f ied Usabil i ty Problems
Findings
Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 7
A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N
D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y
HCS Device Web PortalElderly (n=5) Elderly (n=6) Young (n=6)
Critical 14 6 2Serious 15 10 3Cosmetic 20 26 11Total 51 42 16
Types of Usabil i ty Problems Experienced
Findings
HCS Device Web Portal
Elderly (n=5) Elderly (n=6) Young (n=6)
Crit
ical
Serio
us
Cos
met
ic
Tota
l
Crit
ical
Serio
us
Cos
met
ic
Tota
l
Crit
ical
Serio
us
Cos
met
ic
Tota
l
Affordance 2 2 4 1 2 1 4 1 1 1 3Cognitive loadConsistency 1 1 1 1Ergonomics 2 2 4 4 2 2Feedback 1 3 3 7 3 4 7 1 1Information 5 8 4 17 2 3 8 13 1 1 3 5Interactionstyle
1 1
Mapping 1 1 1 1Navigation 1 1 6 6 3 3Task flow 1 1User’s mentalmodel
2 3 5 10 1 1
Visibility 3 4 7 1 2 1 4 1 1 2Total 14 17 20 51 6 10 26 42 2 3 11 1
6
InformationDoes not understand text ”Detect ing phonel ine”
User ’s mental modelUnclear how to connect B luetooth sca le
Missing feedbackId le screen upon complet ion of quest ions
Visibi l i tyCannot f ind vo lume but tons
Findings
Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 9
A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N
D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y
Y N
Y N
Connecting and Instal l ing the HCS Device
Findings
Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 1 0
A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N
D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y
TaskUser 1 2 3 4 5 Total
1 33:25 10:10 08:47 07:37 01:15 1:01:142 33:44 09:34 04:30 04:54 01:00 53:423 28:25 02:26 02:45 05:08 01:24 40:084 18:43 02:43 04:24 04:07 01:19 31:165 26:05 01:06 03:31 04:45 00:41 36:08
Average 28:09 05:12 05:35 05:18 01:08 45:22
Y N
Object ive: Problems Experienced by Seniors
FindingsSen io rs exper ience more p rob lems than younger usersTypes o f p rob lems exper ienced
When designing for seniors, pay part icular at tent ion to:Connec t ion and ins ta l la t ion d i f f i cu l t iesComplex / techn ica l te rmino logyNon-con fo rmi ty to user ’s menta l mode lInsu f f i c ien t feedbackNon-v is ib le in te rac t i ve ressources (v is ib i l i t y )
Conclusions
A S E S S M E N T – P A G E 1 1
A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N
D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y
Anders [email protected]/~bruun
Department of computer scienceCentre for socio interactive design
CENTRE FOR SOCIO INTERACTIVE DESIGN