Another question on using the mouse as the input device.

[aoifemcloughlin]

David,

I just spotted what you said about BART. I had not heard of this
research, and a quick google search has whet my appetite (everyone
elses research always seems infinitely more interesting than your own
when you're stuck on something!). It is very different to what I am
looking at, and I will not ask you for your programme, however I do
have one question. This is one which I have already asked the PST web
support but have yet to get a response.

In BART participants are able to finish at any point, and bank their
money (if what I just read was correct). When you did this using e-
prime how did you give the participants the ability to end the
experiment without aborting it? Is it a case of a jump label? I also
would like to be able to time how long they continued the trials for,
from the beginning of the first trial, to when they decided to end the
experiment. My dependant variable is the length of time that they
continue to burst balloons for.

My ability at reading and writing in E-Basic is atrocious. This is why
I like e-prime (most of the time) as it allows us less tech savvy
researchers actually create our experiments. Unluckily for me I am the
only one in my institution using e-prime, however for these kind of
little niggly problems this group has been a constant source of
information for me.

Yours,

Aoife

On Jul 30, 4:26 pm, David McFarlane <mcfar... at msu.edu> wrote:
> Stock reminder:  1) I do not work for PST.  2) PST's trained staff
> takes any and all questions athttp://support.pstnet.com/e%2Dprime/support/login.asp, and they
> strive to respond to all requests in 24-48 hours (although current
> estimates are more like 10 days) -- this is pretty much their
> substitute for proper documentation, so make full use of it.  3) If
> you do get an answer from PST Web Support, please extend the courtesy
> of posting their reply back here for the sake of others.
>
> That said, here is my take...
>
> >I've managed to get my experiment to run using a slide display.  The
> >basic premise of the experiment is that a balloon will appear on the
> >screen and the participant clicks on the balloon to "burst" it and
> >continue to the next trial, which is just another balloon. There will
> >be 3 conditions in the experiment, and the number of balloons in each
> >trial will increase across the conditions, giving participants a
> >choice of which balloon they want to burst.
>
> IOW, a Balloon Analog Risk Task (aka BART), pioneered I believe by
> Carl Lejuez and others at the University of Maryland.  I programmed
> one myself in E-Prime based on their materials (but please do not ask
> me for my program, we have not yet figured out a policy or mechanism
> for releasing our task software).
>
> >However, I can't seem to get e-prime to display the mouse's cursor on
> >the screen, which will mean that participants will not be able to
> >actually click on the balloon they want to burst. Surely there is some
> >way of showing the cursor?
>
> >Any tips?
>
> 1) Mouse.ShowCursor True
> Put this in an inline whenever you what to show the cursor (see the
> MouseDevice topic in the online E-Basic Help).  This is what most of
> us would do.
>
> or, 2) Edit > Experiment... > Devices > Mouse > Edit... > Show Cursor = Yes
> will show the cursor from the start of the experiment.
>
> David McFarlane, Professional Faultfinder

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