Disabled ‘R’ All

Bridging the gap between Health and Situational Impairments

Hugo Nicolau hman@vimmi.inesc-id.pt

Prof. Joaquim Jorge

Increasingly popular

Powerful tools

Always near us

@ Home

@ Work

Outdoors

In car

@ Coffee shop

@ Subway

And many many others …

Many contexts

CONTEXT

Overload

Leading to …

Situationally-Induced Impairments and Disabilities [Sears, 2003]

Motor capabilities

Loss of physical stability

Brewster, 2002

Mizobuchi et al., 2005

Lin et al., 2007

Schildbach and Rukzio, 2010

Bergstrom-Lehtovirta et al., 2011

Same old challenges

Brown, 1992

Vanderheiden, 1993

Edwards, 1995

Poulson et al. 1996

Trewin and Pain, 1999

Do they share …

Similar problems? [Yesilada et al., 2010]

Do they benefit from …

Similar solutions?

Goal

Technology Transfer

HIID SIID solutions

Health-Induced Impairments and Disabilities

Situational-Induced Impairments and

Disabilities

Knowledge sharing and reuse

“Reinventing the wheel”

More and better research

Cost and availability

New connotation

Solutions designed for health-induced

impairments can be applied to situational-

induced impairments increasing the users’

performance, by assessing their capabilities

within real mobile contexts.

Hypothesis

“

”

APPROACH

Workplan

Development

Similar problems?

Similar solutions? Evaluation

Which solutions?

Users’ characterization

HIID SIID

Similar problems?

Text-Entry

Capture abilities

Differences and Similarities

Workplan

SIID

Development

Similar problems?

Similar solutions? Evaluation

Which solutions?

Users’ characterization

HIID

SIID Results

3 Walking conditions seated, slow walking, normal walking (2 steps / sec)

3 Hand postures one-hand/two-hand portrait; two-hand landscape

Major Results:

Error rate increases with mobility

Substitutions are the most common

error type (7%)

93% are due to poor aiming

Right-key substitution

HIID Procedure

Elderly 60 – 80 years old

Tremor disorders Age related, Action tremor, Postural tremor, Essential tremor

Characterize users’ tremor Accelerometer, questionnaires, spiral test, medical diagnosis

Larger screen sizes

Workplan

HIID SIID

Development

Similar problems?

Similar solutions? Evaluation

Which solutions?

Users’ characterization

Mobile prototypes

Filters e.g. [Trewin, 2002]

Orthographic correctors e.g. [Kane et al., 2008]

Adaptive keyboards e.g. [Merlin and Raynal, 2010]

Alternative techniques e.g. [Wobbrock et al., 2003]

Text-entry Solutions

Workplan

HIID SIID

Development

Similar problems?

Similar solutions? Evaluation

Which solutions?

Users’ characterization

Mobile prototypes

Hypothesis validation and Guidelines

1. Relationship between physical and situational impairments

2. Guidelines to transfer solutions between user groups

3. Transferability Index

Expected Results

Questions to the Consortium

Is this a valid approach (technology transfer)?

Should I develop novel solutions?

? ? ?

?

THE END

Hugo Nicolau hman@vimmi.inesc-id.pt

Discussion