|
Table
of Contents | Back
| Next
SWITCH CHARACTERISTICS
There are several ways to examine a switch
to determine its applicability for a child. Knowing the
child’s abilities and preferences will help to find
a “match”.
-
The size of the surface “target” that
a child must activate is a primary characteristic; how
large does the surface have to be? how small might it
be? Examine which areas actually activate the switch?
the center? the corners? the edges?
-
The amount of force (pressure) required to activate
a switch must be considered; how sensitive is the switch?
Although a switch may be positioned in such a way that
gravity can add to the force exerted, switch closure
will depend on the amount of consistent exertion by
the user. Switches are often described by the amount
of force/pressure required for activation.
-
Another consideration is the amount of travel that
a switch has. That is, the distance that a switch must
be moved before it activates. Keep in mind however,
that some switches are designed with more “play”
than others; their material may be more flexible.
-
Feedback can be tactile and/or auditory. Many switches
make an auditory “click” when activated.
This may be necessary for children with visual impairments.
Other types of switch feedback include vibration or
musical sound so that the user knows that a switch has
been activated.
-
The durability of a switch is another important feature
as some children may not be able to control the amount
of pressure they use to activate a switch.
-
What does the switch feel like? Does the child prefer
a particular texture? Can it be added to the surface
later?
Many switches are available that can be controlled
by any sensitivity of contact, voice/sound or minimal movement.
It is important to let a child try a variety of switches
at different parts of the day; s/he will let you know which
one is preferred.
Table
of Contents | Back
| Next
|
