Summary of "Deaf-blindness: Implications
for Learning"
Understanding the Effects of Deaf-Blindness
A. The loss of vision and hearing create even
more challenges when combined than a loss of either of these senses
does when looked at individually.
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Deaf-blindness effects motor skills. (e.g., the
ability to walk and move, etc.)
Deaf-blindness effects communication. (e.g.,
the ability to ask for things, let others know how he or she
feels, the ability to show discomfort, etc.)
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Deaf-blindness effects general development
(i.e., lack of movement increases the possibility of low muscle
tone and development, lack of language decreases choice making,
etc.)
B. Sensory Information Access
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Near Senses: Taste, touch, smell (you
can only taste what you put in your mouth, you can touch
only as far as you can reach, and you can smell things
that give off an odor that reaches your nose.)
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Distance Senses: Vision, hearing (You can see as far
as the horizon when you are outside and you can hear
sounds that may be several blocks away- siren!)
C. Vision and hearing loss can vary greatly within
individuals
Some individuals may have a slight hearing loss and be totally blind.
Someone else might have a slight vision loss, but be totally blind.
Yet someone else might have only a slight loss of both senses or be
totally deaf and blind.
D. Accessing information for learning
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Information is not learned
incidentally (without intent or by chance as in learning
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Information is gained through direct instruction (one
to one instruction)
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Information received through distance senses can be
very inconsistent (for example, if a child has a history
of ear infections, one day the child may hear everything
but when the ear is infected, he or she may only hear
loud sounds. In the case of Usher's Syndrome vision is
progressively lost.)
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Motivation to interact with the environment can be
reduced due to the effect of vision and hearing loss (If
you don't know what's out there, why seek it out. In the
case of the "fairy syndrome" things magically
appear out of no-where. This is when the child or student
receives an object without an introduction or physical
explanation of where the object came from. For example: a
child sits at the table ready to eat and the plate of
food magically appears from no-where. The child should be
guided through the process of removing the plate from the
cabinet, allowed to serve food from the pot and assisted
with the plate to the table. Once the child has eaten,
the plate should be carried by the child, washed, dried,
and returned to the cabinet. The next time the child is
presented with a plate, he or she might have a place of
reference as to where the plate came from. This may take
several sessions for the child to make the association,
but the end result is worth it. This process should be
addressed for all objects utilized in a child's day.)
E. Communication and Movement
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a. Communication and movement are closely
linked, stimulating each other to continue to develop.
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b. Impaired vision and hearing interfere with the
individual's ability to understand and respond to the
communication and movement of others in their environment.
F. Incidental Learning
Vision is the organizing sense. It
synthesizes large amounts of information very quickly
thus allowing an individual to learn without much effort.
(Remember 80% of our information in gathered through vision!)
G. Concept Development
Concrete to abstract
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Build on concrete experiences and previous
learning. (Concrete means "real" experience--not
something that is read, imagined, etc. A student with
deaf-blindness must experience all situations.)
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Provide language to label new concepts. (The
language can take on many forms: verbal, tactile, touch cues,
object cues associated with an activity, etc.)
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Help individual to generalize learning and use
new information. (Carryover is important to help the child make
associations effective and faster. Activities should be consistent
between home and school.)
Examples: To help a child associate an
object such as a spoon to the functional activity of
eating, every time it is time to eat a spoon should be
presented prior to going to the dining area. All modes of
communication should be utilized (verbal, tactile (holding
and feeling the spoon) smelling of food in the distance,
and hearing the sounds typical in the kitchen or
cafeteria). Presenting an object that is somehow related
to the activity should be the beginning point. Once the
child/student anticipates the activity by demonstrating (vocalizing,
smiling, etc.) he or she understands or if you are not
sure, use a mismatch. Give the child a different object
for the activity and observe to see if the child
demonstrates confusion or an unsure response. Then go
back to the original object to verify the association.
H. Mental Imagery
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Begin by exploring the whole item to
develop an image of the item. (For example, children at a
very young age learn that McDonalds has a Playland. They
quickly associate the sound of the word "McDonald's
with the Playland and are able to think or make a mental
image of the McDonald's Playland!)
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b. Use of models if the child/student understands
symbolism. When the student understands an association,
the teacher can use other symbols to identify an activity.
I. Emotional Development
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Bonding behaviors: interactive
dialogue (When working with an individual who is deaf-blind
it is important to introduce yourself using a touch sign,
particular smell (perfume), distinct hair, etc. to
facilitate the bonding behavior. Over time you become a
familiar person to this individual and trust can be
developed.
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Attachment behaviors
J. Sense of Self and Body Image
Refer to
"Theory In Practice," page 34, of Hand-In-Hand "Ideas
for Enhancing Awareness of Body Image.
K. Perception of Safety
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Over protectiveness by others (Families
may be over protective of a child who is deaf-blind.
Different cultures have different viewpoints about a
child who is deaf-blind. In some cultures, having a child
with a disability is considered a gift, while others may
view the birth of a child with a disability as a
punishment. A teacher needs to understand the perspective
of the parent(s).
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Comfort level of individual with routine and
environment (If a child/student with deaf-blindness is
fearful or uncomfortable, everyone involved with this
child must think through each task or activity and take
each step gradually never overwhelming the individual.
The comfort level will increase with consistency and
repetition.)
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Safety verses allowing natural possibilities for
learning (Safety issues should always be first and
foremost for all involved in the development of a plan
for an individual with deaf-blindness, including the
individual. Example: How would you teach a child that is
deaf-blind to avoid a dangerous object in the home,
school, etc.? (Stove, heater, etc)
L. Learned Helplessness
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Due to limited access to information:
vision and hearing of individuals who are deaf-blind may
be unaware of their impact on their environment.
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Individuals who are deaf-blind may become victims of
the "fairy-godmother syndrome:" Things they
wish for, may just magically appear or disappear. (To
avoid learned helplessness, the individual must be
involved in every step of the activity. Everyone must
learn to "support" rather than "do"
for the individual who is deaf-blind.)
M. Isolation
Reflect on how it felt to be
blindfolded and hard-of-hearing. Did you feel "isolated?"
N. Four critical factors that effect an individual
with deaf-blindness.
a. Age of onset of vision and hearing loss.
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The earlier one is affected, the more
significant (critical developmental periods.
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Individuals who are older at the time of their
loss have a foundation to build on.
b. Degree and type of vision and hearing loss.
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Even a small amount of residual vision or
hearing allows access to some environmental information.
c. Stability of each sensory loss. (Look at
"Help at a glance" section on pages 41-42 of Hand-In-Hand
for vision and hearing loss.)
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Progressiveness of the loss requires the
individual to constantly adjust to how they obtain and use
information and can be frustrating. Look for behavior changes in
children with deaf-blindness with limited communication skills.
This may be a cue to a change in their vision or hearing.
d. Educational intervention
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Amount and type of intervention depends on the
child's vision and hearing loss.
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The amount and type of intervention depends
depends on the families skills and needs for support.
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Consistency is a key to the development of
independence.
O. Forms of Deaf-Blindness
a. Early onset
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Vision and hearing loss before age 2.
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Severe to profound losses of both senses.
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Lack environment input beyond arms reach.
b. Early onset, but less severe losses (mild to
moderate)
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Sometimes glasses and hearing aids do not
completely restore vision and hearing and many factors can
interfere with information gathering.
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Can use some environmental information for
learning and development of language.
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Benefit from multi-sensory approaches to
learning to fill in gaps.
c. Early hearing disability with later vision loss
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Hearing impaired before age 2.
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Can usually master daily living activities at
early age
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Usher syndrome (Hand-In-Hand page 47,
"Theory In Practice: Usher Syndrome."
d. Later sensory losses
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Lose vision and hearing as young adults.
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Have already mastered mobility and
communication using vision and hearing.
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Can use previously learned information to
adjust to losses.
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Will need to relearn academic or job skills
without the use of vision or hearing.
P. Additional disabilities and their effect on the
individual with deaf-blindness
a. Common Causes
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Rubella (German Measles)
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Cytomegaloviris (CMV)
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Prematurity
b. Types of additional disabilities
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Motor (example: cerebral palsy)
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Cognitive
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Neurological
Q. Special Health Care Needs
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Often referred to as medically fragile.
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Often are technology dependent and limited in their
movement and experiences.
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Benefit from being in instructional settings with the
proper medical support.
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Often are absent due to illness/hospitalizations.
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Benefit most when school and medical personnel and
family work closely together.
R. Suggestions for learning
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Individuals with deaf-blindness are unique, so
one must get to know each individual and his or her unique strengths
and needs.
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Observation is one of the best ways to learn about each individual:
observe his or her exploration of the environment and especially how
he or she communicates.
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Information the individual with deaf-blindness receives may be
distorted, limited, or incomplete.
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Needs:
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To be taught what others learn incidentally.
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Provided the opportunity for direct experiences
and repetition.
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Allowed to apply his or her learning in a
variety of situations.
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Provided with multi-sensory learning
opportunities to fill in what is missing from his or her vision
and hearing..
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Maximize tactile information.
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Shown how to examine things systematically.
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To be taught what others learn incidentally.
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Provided the opportunity for direct experiences
and repetition.
-
Allowed to apply his or her learning in a
variety of situations.
-
Provided with multi-sensory learning
opportunities to fill in what is missing from his or her vision
and hearing..
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Maximize tactile information.
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Shown how to examine things systematically.
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