03 Cognitive Capabilities of Elderly

CLARK
Design Studio
Winter
2016
1
TEAM
Rose-Marie Keva
(Bachelor of Interior Architecture)
Joel Kotsjuba
(Bachelor of Recreation Management)
Arno Peever
(Bachelor of Machine building)
Andrej Kmeť
(Bachelor of Industrial design)
SUPERVISORS
Martin Pärn
(Estonian Academy of Arts)
Ruth-Helene Melioranski
(Tallinn University of Technology)
2
“
About the project
Clark is a conceptual solution
developed as a part of Design &
Engineering master’s program course
Design Studio during the fall semester
in 2016 by an international and
i n t e rd i s c i p l i n a r y t e a m o f s t u d e n t s
f ro m E s to n i a n Ac a d e my of A r t s a n d
Ta l l i n n U n i ve r s i t y of Te c h n o l o g y. T h e
aim of the Design Studio was to search,
d eve l o p a n d te s t n e w c o n c e pt s to
s u p p o r t t h e wo r k to c o m e - Wo r k 2 . 0 .
3
CONTENTS
About the project
01 Introduction
02 Problem description
03 Cognitive Capabilities of Elderly
04 Mnemonics
05 Brief
06 Competitors
07 Concept Development
08 Final Concept
09 Conclusions
10 References
4
01
Introduction
At the beginning of the project, we were
looking for the opportunities to enhance
collaboration at work. Through discussion
and brainstorming, we worked through the
possibilities of collaborations at work and
around it, and found it interesting to focus
on the aspect of engaging communities. We
narrowed down the selection of target group
and chose to focus on engaging elderly to
the labour market due to the relevance of the
topic.
During the course of the project, the team
faced several challenges, but it was dedicated to overcome them by showing a
strong work ethic, teamwork and willpower
to achieve good results. At the development
stage, the concept took part of the Universal Design Competition renounced by The
Estonian Ministry of Social Affairs, from where
it got a positive feedback from the jury and
received a financial prize. This team decided
to use the prize to produce a professional
presentation video for the final presentation
Over the course of the project, we con- of the concept.
ducted ten in-depth interviews, out of which
half of the interviewees had a knowledge
worker professional background. In addition
we made a group interview and questioned
senior knowledge workers at ABB and Telia
telecom company. The last two interviews
have not been brought out separately in this
paper, but were considered in the development of the concept. The literature study
together with the interviews presented in this
paper is put in a sequence correlating to the
development of the project over time.
.
P1. Concept roadmap / source: private source
5
02
Problem description
“
Demographical Trends:
Aging Population and
its effect on the labor
market
Demographical Trends/
Aging Population and its effect on the
labor market
In 2010, the old-age dependency ratio, that
describes the ratio of 65-year olds and older compared to the people of working age
(15-64-years old), was 25,5%. This means,
for every hundredth of 15-64 year old there
was 25,5 65-year old or older people, and
the figure is steadily growing, indicating the
decreasing number of working aged people.
With optimistic prognosis, Estonian figure in
2030 will be 32,6 and by 2050 36,9 - this is
1,4 times higher than at current times (Puur
ja Põldma 2010). One of the main effects of
the increasing trend of old-age dependency ratio is the decreasing tax- and revenue
base.
A sphere, where the effect of aging population
and the societal changes are strongly manifesting itself is the labor market. Labor market pressure index identifies the correlation
between 5-14 and 55-64 year olds in the
population. If the index is above 1, there are
more people entering the labor market than
leaving due to the age. The last 10 year the
index has decreased - from 1,2 in 2001 down
to 0,77 in 2011 and continues.
According to Eurostat, the amount of people in the Estonian work force will decrease
over 100 000 in 20 years (Look P2. Person´s
employment capability).
To keep the economical capacity on at least
the same level as it is today, the government
has chosen to tackle the problem by considering to increase the local employment rate
rather than solving it through immigration
6
02
Problem description
Person’s employment capability depends
largely on his work-ability, or in other words
the ability to use his physical, mental, social resources at work (Leetmaa, 2004). This
means that in order to support the elderly
employment capability, there should be the
supportive tools and means to empower the
use of their personal resources at work. We
chose to support their use of mental capabilities.
P2. Person´s employment capability/ source: private source
Interviews about retirement,
working, learning
The interviews at Nõmme marketplace, Elderly
Cultural Centre and 3rd Youth University took
place during the research phase and served
a purpose to find out the needs and desires
of elders work life, as well as the reasons and
problems for retiring.
7
P3. Elderly Cultural Centre visit/ source: private source
02
Problem description
Thoughts on retirement and working /
Nõmme marketplace
retired. Most of them continued with an unskilled work after retiring from their previous
profession like administrator, holding kids,
At Nõmme market place we gathered an guard etc.
overall thought about work after retirement.
Interviewees were 60 to 81-year-old men After the meeting we became curious why
and women with different professional back- do people later in their professional career
grounds. We were looking for answers to choose to take a new direction instead of
questions like: what were the reason for their taking the effort to develop and learn new
retirement, would they like to work again, are things to pursue the same professional posithe health issues the main problem for stop- tion.
In the light of this question, we started to look
ping working.
Elderlies gave us different feedback. The main for ways to support the elderly capability to
reasons for retirement were that younger took learn and develop.
their position over, they didn’t have any more
energy or they would like to separate time Elderly and learning /
for other important things in life, like family. 3rd Youth University in TUT
One interviewee mentioned that he didn’t feel
comfortable with new digital technology. Most At the 3rd Youth University we took part of a
of them wouldn’t go back to work unless the lecture where the professor introduced and
working environment is suitable and pleasant explained new digital communication devicfor them. At the same time persons who were es. The lecture was incomprehensible and
in retirement age and working, said that they reminded more of a show where the professor tried to explain his point through funny life
work until they have health for it.
situations, but it was difficult to draw meaningful conclusions out of it. After the lecture
Reasons for retiring /
we interviewed several participants. Our aim
Elderly cultural centre
was to find out how elderly learn new things
At the Elderly Cultural Centre, we interviewed and what are their thoughts about this leca group of ladies aged 69 to 85, with different ture.
professional backgrounds and mostly retired.
Our aim was to find out what steps they have
taken during their career to get better understanding why people retire from their speciality.
Majority of ladies said that different life circumstances, like sickness or caretaking of a family
member forced to quit the job at a certain point
of their career. After getting healthy again or
when circumstances changed, almost none of
them did not return to the same position because they felt that things had moved on and
it would be difficult to adapt back into. Some
of ladies said that it was hard to get familiar
with new technologies like computers so they
8
Most of them said that their primary information channel is internet and TV. To get some
deeper understanding of some subject they
prefer attending trainings. Their opinion on
the lecture were good, although when asking a more detailed questions about the subject, they failed to have an understanding.
It was surprising that elderly are embarrassed
to admit their lack of understanding and
rather hide their lower capabilities. Only one
man said that he didn’t understand anything
02
Problem description
and claimed it’s his own fault. They showed
a clear interested in self-development and
staying up-to-date with current technological possibilities for improving their daily lives.
P4. 3th youth University / source: tnuni.sk
9
This finding contributed in understanding the
importance of empowerment - the need for
strengthening and supporting learning in a
discreet manner.
03
Cognitive Capabilities of Elderly
“
One of the stereotypical assumptions towards aging health condition is that they retrograde back to being childish, or lose their
cognitive capabilities completely. Due to the
assumptions, there is little attention paid to
the causes of the health problems, assuming all is natural part of aging. But there is a
clear difference in decreasing health condition resulted by natural part of aging and as
a cause of illness. It is important to identify
the changes in health taking place as part
of aging. We decided to find out about the
changing cognitive capabilities of the aging
brain.
Strengths of Elderly
There are different models and theories
about intelligence, but most theorists agree in
dividing it into primary and secondary mental abilities (Cavanaugh and BlanchardFields, 2002).
A common subset of the primary mental
abilities is made up of numeric facility, word
fluency, verbal meaning, inductive reasoning, and spatial orientation.
+more concrete
+solve familiar
assignments faster
+think less over
Fluid and crystallized intelligence
The research pertaining to the secondary
mental abilities usually focuses on two: fluid
intelligence and crystallized intelligence
(Cavanaugh, et. al., 2002). Younger people
perform at a higher level where rote memorization that is part of fluid intelligence is
measured whereas older, more experienced
people make up for this in what is called
crystallized intelligence through better developed verbal abilities and judgment (Merriam, 2001).
alternatives
Fluid intelligence describes the ability to handle new situations and problems. It performs
best in young age, develops until age 25, and
is not dependent of cultural environment or
the way of upbringing.
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03
Cognitive Capabilities of Elderly
Crystallized intelligence represents the capacity of info, skills and strategies that person
has gained through his fluid intelligence and it
develops till the age 50. Unlike fluid intelligence,
it is dependent of the environment, education
and cultural background of the person.
Strengths & weaknesses of Elderly
Those cognitive strengths and weaknesses
manifest itself in knowledge work assignment,
which includes tasks such as decision making,
planning, executing. If given an assignment of
knowledge work, the elderly can be characterized by following:
- Conservative in decision making
- Doubtful in fulfilling tasks and afraid to fail
- In new situations, try to minimize the risk of
failing more than young
- The executional capabilities - such as
planning, initiating, carrying through can lower
+ More concrete
+ Solve familiar assignment faster based on
experience
Interview/
Senior Knowledge-Workers on
Note-taking
Later in the concept development stage,
we conducted four interviews with elderly
knowledge workers to find out how do they
take notes and what are the challenges.
Note-taking and task-management is very
individual to everyone and it was evident in
the example of our interviewees. There are
many different tools for task-management
and note-taking, such as project timeline
map, wall calendar, paper note-book, digital calendars, task-management softwares,
etc. It came out that they prefer having a
personal note-book for writing down tasks
and notes separately from the collaborative
tools provided to them from work. They created the structure of the content by themselves - some were organized and some
were random. The information that is important for them to note down is everything that
is new and out of their daily assignments. Information such as instructions, new names,
important personal and work-related events,
passwords and tasks were important to take
notes of. One of the preferred ways to write
down the tasks was in list and once it was
done to strike them through.
+ Think less over alternatives
The challenges in note-taking:
Additionally, the research validates the necessity of this work and confirms that the
after-retirement time is an extremely vulnerable time for elderly - it is the dangerous period for losing all kinds of capabilities, including mental. (Kai Saks, 2015)
11
-writing by hand takes more time and effort
-need for glasses when reading
-remembering things takes longer time and
effort
-reaction time is slower
-it is important to write down everything
new
-handwriting is bad
03
Cognitive Capabilities of Elderly
During the development of the interface
design, we applied the knowledge from the
interviews and chose to provide a task-list
that is less structured and gives a freedom
to the user to choose the order and timing
for executing the tasks.
When asking about using software tools,
it turned out that they had tried out some
calendar apps, but quit after some time,
because “it was a little complicated” and “it
didn’t stick to them”. In their case, they were
not afraid to test out new technology, as in
some examples they had created a website
on their own and were using smartphones
daily.
We concluded that the note-taking solution that we are creating should be
easier than writing with pen and paper and
it should provide an intuitive user-experience
for the user. During the development of the
interface design, we applied the knowledge
from the interviews and chose to provide a
task-list that is less structured and gives a
freedom to the user to choose the order and
P6. Note-taking / source: private source
P5. Note-taking / source: private source
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P7. Note-taking / source: private source
P8. Note-taking / source: private source
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03
Cognitive Capabilities of Elderly
“
Memory
Memory is the faculty by which the mind
stores and remembers information (Oxford
English Dictionary) Memory is divided into
three different types: long-term, short-term
and working memory.
Short-term memory - responsible for the
temporary storage of information (from 30
seconds up to few minutes)
Long-term memory - responsible for the
storage of information for an extended
period of time
Memory is divided into
three different types:
Working memory - Part of short-term memory which is concerned with immediate
conscious perceptual and linguistic processing. (Oxford English Dictionary) It is also
referred to as a functional ability to store
material for the purpose of carrying out a
cognitive task. (Kai Saks, 2015)
long-term,
short-term and
working memory.
As mentioned before, some cognitive
capabilities are getting better in age. For
example, the communication and language
skills are increasing, which is the function of
semantic memory.
Lexical memory is the part of the memory
which is used for retrieving factual information, such as names and objects, from
your memory. It’s working function decreases in years, causing elderly often not to
remember specific facts.
The performance of working memory,
which is a part of short-term memory, and
functions for the purpose of remembering
information for a specific task, decreases in
older age as well.
Memory decreases in one third of elderly
with good health. (Kai Saks, 2015.)
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03
Cognitive Capabilities of Elderly
It is therefore important to support the
working function of short-term memory as it
is one of the naturally decreasing cognitive
functions for humans.
Empowering the elderly to remember new
information and retrieve it for carrying out
tasks can have a significant impact in their
performance at work.
P9. Cognitive capabilities of elderly / source: washington.edu
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04
Mnemonics
“
Memory training workshop
During our research phase we also took a
part in a 2-day Memory training held by a
well-known memory trainer Tauri Tallermaa.
The goals of this training were to:
· discover the potential abilities of the brain
and the memory and put them in current use
·
improve the reminding process and saving the information
·
make yourself clear and memorable for
other people
· improve attention and concentration skills
·
increase confidence and competitiveness
Creating Effective
Visual Imagery
The workshop started with a short introduction of the memory, its abilities and different types, how do we memorize different
things?, what is the brain?, how does it remember etc. We also did a memory test before the training and after it, to compare the
results and to see how effective the training
had been.
Form mental images
Make associations
between images
We went through the remembering process. Got to know the relationship between
goal setting, focusing and understanding.
It occurred that the first rule of memorization is to create associations and that
there are various possibilities for the creation of links to the information you want
to remember. We can create these associations only through our imagination.
That’s why we did some exercises to discover, activate and train our imagination.
As an interesting fact, it came out that another remembering technique uses location. We used the Journey method to learn
how the location affects the saving of the
information and the later usage of it. And
as before we tried out the Journey method
16
04
Mnemonics
walking around in different rooms and connecting the information that need to be remembered with specific elements in the
rooms.
1)Form mental images
2)Make associations between images.
These two tasks are described in detail as
following.
The most important aspect of remembering any kind of information is repeating.
For remembering numbers and names
we were introduced to Dominic technique,
which was basically replacing numbers with
the first letters of weekdays and then a bit
more common number-shape link for better remembering by visual resemblance.
Forming images
Concrete nouns are the easiest information
to visualize. A concrete noun is a noun that
identifies a specific object such as a ball or
tree. These items are easy to visualize because you just have to picture the actual object.
Connection mnemonics/
Visual mnemonics
The task of visualizing becomes more difficult with more abstract information. For example, how do you visualize numbers and
formulas? Just picturing a number as it is
written on the page probably won’t help you
with remembering it.
Visual Mnemonics
It is a well established fact that the mind
easily remembers images. Visual mnemonic
systems takes advantage of this fact to create systems that allow you to commit virtually unlimited amounts of information to
memory. Using imagery can make learning
more fun and interesting — especially when
compared to repetitive learning by rote.
Generating images for abstract material
Techniques exist for converting abstract information to images. These techniques include:
Associating a visual symbol that has a similar meaning or that can cue the idea we are
trying to remember. For example, the word
‘learn’ can be associated with an image of a
student in school.
Visual mnemonic techniques have been
used by world record holders that have
committed huge amounts of information to
memory.
The better your ability to perform the above
two tasks the better you will be able to take
advantage of the visual mnemonic systems.
Fortunately these tasks aren’t very difficult
to begin with and they get easier with practice.
Substituting a word or words that are similar in sound or meaning which are easier
to visualize. For example the word ‘fulcrum’
could be represented by the images of a
glass ‘full’ of ‘crumbs’.
Using your own images can be better than
using images suggested by another. This is
because you likely have your own unique
image that is associated with abstract ideas which are more appropriate for you than
images suggested by someone else.
Creating Effective Visual Imagery
In order to create effective visual imagery
you need to be able to:
17
04
Mnemonics
Making associations between images
Don’t just think of the words and actions —
actually visualize the activity. Also, including many details in the imagery will make it
more effective.
When making a visual association between images think of the two images interacting in a way that uses some or all of
the following tips. Clearly visualize the images in your mind with as much detail as
possible. Images can be further enhanced
by adding other sensory detail such as
sound, touch or texture, even taste or smell.
Bizarreness
Images should be bizarre as opposed to
plausible — unusual, weird, implausible, incongruous, or ludicrous. This is not always
necessary but bizarre imagery is generally
remembered better. By adding bizarre elements you also make the imagery unique
which can help distinguish it from similar imagery. Making images bizarre can also add
an emotional factor.
Interaction
The two items you are picturing should be
actively interacting in some way not just
pictured beside each other. Sometimes you
can even substitute one object for another.
For example, if you are associating the images of a mouse and pen, imagine writing
with a mouse as though it were a pen, or
picture a pen running in an exercise wheel.
One way to create bizarre images is to exaggerate attributes of the items or the actions they are performing.
Emotion
Images that evoke an emotion — especially a
positive or humorous emotion — can be beneficial. It is important to avoid negative emotions as they have been shown to interfere
with memory.
Vividness
Images should be clear, distinct, and strong.
It is also useful to add motion so that the interaction is like a movie instead of a static
image. The more you can see the imagery
the better.
P10. Mnemonics / source: keyword-suggestions.com
18
05
Design brief
“
“We want to create a
smart watch application that
would make everyday notetaking and remembering
important information
easier. As an addition it will
also work as a memory
trainer, cause the app will
remind the user with a symbol
of the task not the task itself,
so keeping the brain active
through associations that the
user has to make while
using it.”
19
06
Competitors
We looked through the smartwatches available in the market for elderly. There are
some customized devices for the elderly
such as Omate, but it was not a device for
everyday use in the working environment,
as the screen size is small and it is leaving
too much the impression of an assistive device meant for elderly. At one point in the
concept development we consiered the op-
tion to develop the smart wrist device, but
taking into consideration of production costs
and tight competition amongst smartwatches, we continued with a software solution.
Affordability is another important aspect
in choosing the device, so it should be lower-price range smartwatch, such as Sony
Smartwatch 3 or Moto 360 I Gen (in a price
range of 150 USD).
P11. OMATE / source: qatarliving.com
There are several productivity and notetaking APPs developed on Android platform,
such as Todoist, Evernote, Google Keep,
which makes the new concept need to have
a clear competitive advantage.
P12. ToDoist / source: geeky-gadgets.com
20
06
Competitors
P13. Evernote / source: help.evernote.com
P14. Google Keep / source: phandroid.com
21
07
Concept development
Clear visual design and information structure are one of the most important elements of the design goals of the concept. It
is very important to visualize and organize
information in a way, which is easy to read
and understandable not only for young
people or people who are experienced with
technology but also for elderly.
ning as force-touch buttons at the same
time. Integrating force-touch buttons adds
value for elderly as it gives a physical feedback during navigation. This idea received
positive feedback also from young users,
who prefer smartwatch experience different
from regular touch-screens.
As this concept would require a square design of the screen, we started to develop it
further with a possibility in designing both
hardware and software solution. We were
interested in continuing with that concept,
but after being stuck for some time, we felt
to be too limited by the 4 squares and the
restrictions it made in visually organizing information. Considering the little added value
that it gave in connection between user and
device, we decided to try out other options.
During the development process we tried
and tested several graphical concepts for
interface
The Four-Button Interface:
The concept uses the simple logic of four
squares to divide the information and provide a simple navigation throughout the
app. The square shape screens are functio-
P15. 4 Button Interface/ source: private source
We brainstormed many different options
and proposals, drawing inspiration from
animations, interactions from the real world
and some more abstract ideas. For example we drew inspiration from productive
elements in the nature such as bees, trees
and liquid elements. Also, we tried out various hand movements in designing most in-
tuitive user interaction for the app. We chose
to settle with “the bubble concept” for the
final interface design, as it provided a free,
intuitive, and simple visual language that is
understandable and quick to learn for all the
users.
22
07
Concept development
moving some steps to create an easier and
faster use of the functions. After several developments of the UX schema, we could apply final visual design on the top of it
In addition to the visual side, the functionality of the app holds an important role. We
created user interaction schemes, built paper prototypes, and tested them on elderly
knowledge-workers. We received valuable
feedback, implemented the changes by re-
P16. Antoher versions of Interface/ source: private source
P17. Schema and prototype/ source: private source
23
08
Final concept
Clark empowers you to remember
the important things!
mands and touch-screen. It holds a simple
design to make note-taking intuitive and at-
Clark is a smartwatch app that enables to
easily record, organize and remind tasks
and notes. It allows to record tasks by voice
and additionally, it helps to train the brain
by enabling to create associations with the
tasks through symbols. The app is designed
to take into account various user groups’
Clark makes note-taking seamless and revitalizes the memory through the use of
connection mnemonics. Record tasks, take
notes, create to-do lists effortlessly by voice
and set reminders with symbols which assists with remembering the information.
tractive for everybody.
needs and can be used through voice com-
CLARK
P18. Final concept/ source: private source
P19. Voice recording/ source: private source
24
08
Final Concept
Speech-recognition technology recognizes
and translates the spoken language into
text instantly, providing a fast note-taking
without disturbing the workflow.
Simple interface design and intuitive interactions with modern technology makes notetaking experience intuitive for everybody, including the people with special needs.
Connection mnemonic technique, used in
the reminder function, allows to make associations between the tasks and assists on
remembering the necessary information.
We created the Clark presentation video
that is accessible by the URL link or QR Code
https://vimeo.com/199215289
P20. Interface/ source: private source
P21. QR code for CLARK video/ source: private source
25
09
Conclusion
This project is an interesting example of an
universal design solution, as there was no
aim to create a solution to meet the needs
of many user groups. But as striving to solve
one very relevant problem of a rather extreme user group, it became beneficial and
relevant for many.
For the limited amount of time, only paper
prototypes were used for testing. For further
development, the interface and interactions
should be developed, tested further and a
digital prototype with animations should be
created. Additionally, the process of creating
and setting symbols in the reminder function
can be developed further, as it might lead to
It is not only targeting the problem of short- new interesting solutions.
term memory of the aging, but also the relevant problem of information overload, which For any further development, it is important
creates a need for an assistive device to to note that there are a lot of well designed
save and remember the important informa- productivity and note-taking apps available.
tion.
In order to succeed, Clark should maintain
and be developed on its unique proposal of
Clark is a concept that is worth developing combining seamless note-taking and unique
further, as it holds a lot of potential that was reminder function, as well as provide simple
user experience.
confirmed through several feedbacks.
P22. Reminder/ source: private source
26
10
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Eurostat, Labor market and labor force survey statistics, 2015, URL:
http://ec.europa.eu/eurostat/statistics-explained/index.php/Labour_market_and_Labour_
force_survey_(LFS)_statistics
2.
Actively Aging Development Plan 2013-2020, Ministry of Social Affairs, URL:
https://www.sm.ee/sites/default/files/content-editors/eesmargid_ja_tegevused/Sotsiaalhoolekanne/Eakatele/aktiivsena_vananemise_arengukava_2013-2020.pdf
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Leetmaa, R., Võrk, A., Kallaste, E. (2004). Vanemaealine tööjõud tööturul ja tööelus. PRAXISe
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Merriam, S. B, 2001, The new update on adult learning theory
9.
Oxford English Dictionary, Source: https://en.oxforddictionaries.com/
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Mnemonics, T.Tallermaa, URL: http://www.kiirlugemine.ee/malutreening
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Visual Mnemonics, Skillstoolbox.com, URL: http://www.skillstoolbox.com/career-and-education-skills/learning-skills/memory-skills/mnemonics/visual-mnemonics/
27
12. Picture sources
P1. Concept roadmap / source: private source
P2. Person´s employment capability/ source: private source
P3. Elderly Cultural Centre visit/ source: private source
P4. 3th youth University / source: http://tnuni.sk/aktuality/promocie-studentov-univerzitytretieho-veku/ff498b1927b40b19c5384ec3b12211b0/
P5. Note-taking / source: private source
P6. Note-taking / source: private source
P7. Note-taking / source: private source
P8. Note-taking / source: private source
P9. Cognitive capabilities of elderly / source:http://www.washington.edu/news/2014/01/13/
cognitive-training-shows-some-lasting-effects-in-healthy-older-adults/4.
P10. Mnemonics / source:http://www.keyword-suggestions.com/bW5lbW9uaWMgdGVjaG5pcXVlcw/
P11. OMATE / source:http://www.qatarliving.com/mobile-devices/mobile-phones/advert/
omate-truesmart-android-watch-sale-or-exchange
P12. ToDoist / source:http://www.geeky-gadgets.com/todoist-productivity-app-now-supports-android-wear-19-12-2014/
P13. Evernote / source: https://help.evernote.com/hc/en-us/articles/209005897-How-touse-Evernote-for-Apple-Watch
P14. Google Keep / source: http://phandroid.com/2015/04/23/google-keep-notes-android-wear-update/
P15. 4 Button Interface/ source: private source
P16. Antoher versions of Interface/ source: private source
P17. Schema and prototype/ source: private source
P18. Final concept/ source: private source
P19. Voice recording/ source: private source
P20. Interface/ source: private source
P21. QR code for CLARK video/ source: private source
P22. Reminder/ source: private source
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