From: Peter Ceresole on
James Jolley <jrjolley(a)me.com> wrote:

> > I used one for a year at least, but then realised that for me everything
> > was actually easier and quicker with a mouse. So I gave the fat
> > Kensington away.
>
> I'd be interested in this because many disabled users prefer them for
> accessibility. Are there any studies done comparing the productivity
> rate of someone using a trackball rather than a mouse?

I don't know, but I know that my old fat Kensington trackball was passed
on to somebody who had problems using a mouse- and I was told that they
loved it.

I can also easily see how, for somebody who doesn't have effective
vision, the fixed reference point of a trackball as opposed to the
boundless prairies of a mouse mat might make a great deal of difference.
--
Peter
From: J. J. Lodder on
Peter Ceresole <peter(a)cara.demon.co.uk> wrote:

> J. J. Lodder <nospam(a)de-ster.demon.nl> wrote:
>
> > Not giving up the big old Kensinton trackball yet.
>
> I used one for a year at least, but then realised that for me everything
> was actually easier and quicker with a mouse. So I gave the fat
> Kensington away.

I have the mouse still connected, and rarely use it.
Guess it also depends strongly on how big your screen is,

Jan
From: Peter Ceresole on
J. J. Lodder <nospam(a)de-ster.demon.nl> wrote:

> I have the mouse still connected, and rarely use it.
> Guess it also depends strongly on how big your screen is,

I use a 17" iG5. Seems a nice mousy match.
--
Peter
From: J. J. Lodder on
Peter Ceresole <peter(a)cara.demon.co.uk> wrote:

> J. J. Lodder <nospam(a)de-ster.demon.nl> wrote:
>
> > I have the mouse still connected, and rarely use it.
> > Guess it also depends strongly on how big your screen is,
>
> I use a 17" iG5. Seems a nice mousy match.

Mine is 3520x1200, that is
1920x1200 and 1600x1200 side by side.
The customisable acceleration of the kensington
makes that easiy manageable, without losing fine control.
Just push the ball and let it spin,

Jan
From: James Jolley on
On 2010-03-19 20:24:58 +0000, Duncan Kennedy
<no-spam(a)nospam.otterson-bg.couk> said:

> In message <80i2emFar6U3(a)mid.individual.net>, James Jolley
> <jrjolley(a)me.com> writes
>> On 2010-03-19 16:42:09 +0000, peter(a)cara.demon.co.uk (Peter Ceresole) said:
>>
>>> J. J. Lodder <nospam(a)de-ster.demon.nl> wrote:
>>>
>>>> Not giving up the big old Kensinton trackball yet.
>>> I used one for a year at least, but then realised that for me everything
>>> was actually easier and quicker with a mouse. So I gave the fat
>>> Kensington away.
>>
>> I'd be interested in this because many disabled users prefer them for
>> accessibility. Are there any studies done comparing the productivity
>> rate of someone using a trackball rather than a mouse?
>>
> It may depend on the nature of your RSI! That's why I use one - I
> developed RSI many years ago and although it eventually cleared, it was
> not until I started using a trackball with a thumb control for the
> buttons and fingers on the ball (Not the other kind with the ball in
> the middle).

Interesting that it worked for you. People have a love/hate
relationship with them generally from what i've seen, but the disabled
community tend to prefer them. As peter points out, the partially
sighted would find them useful because they have a good reference point.

Best

-JAmes-

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