Keypress

[Tony Zuccolotto]

Jeff,

OK, shouldn't be too bad.  

1. Double click the Experiment object and navigate to the Devices tab. 
2. Edit the properties of the Keyboard device and change the Collection
Mode from Presses Only to Presses and Releases.
3. Create a TextDisplay object at the start of your trial procedure and
use it to tell the subject to press and hold the '1' key.
4. Add a Keyboard input mask to the TextDisplay and set its Allowable
property to "1" which will indicate you will allow only a Press of the
'1' key.
5. Set the Duration property to "(infinite)" and the End Action to
Terminate.
6. Follow this first TextDisplay with a second TextDisplay.
7. On the second TextDisplay set the Duration to 1000, add a Keyboard
input mask and set the End Action to Terminate.  I'd also use this
object to change the instruction text to something like 'Good. Continue
holding until the trial begins...'
8. Set the Allowable property to '{-1}' to indicate you only want to
accept a Release on the 1 key.
9. After the second TextDisplay insert an Inline that uses and
If-statement to check the RT property of the second TextDisplay.   If
the user was still holding down the key when you got into the Inline
then the TextDisplay.RT property should be 0.  If they released the key
before 1 second elapsed then TextDisplay.RT should be some value 0 < x
<= 1000.
10. At this point you know what happened and you can decide what to do
next.

There are variations on this model you can do in the Inline depending on
how closely you need to control what the participant does exactly, but I
think this should get you pretty close to what you desire.

Hope that helps,
Tony

> -----Original Message-----
> From: Jeffery Jankowski [mailto:jankowsk at aecom.yu.edu]
> Sent: Monday, June 12, 2006 11:20 AM
> To: Tony Zuccolotto
> Subject: RE: Keypress
> 
> Tony,
> 
> Press and hold.
> 
> Jeff
> 
> At 11:03 AM 6/12/2006 -0400, you wrote:
> >Jeff,
> >
> >Is it the case that you want the participant to press a key and hold
it
> >down for 1 second before beginning or is it that you want them to tap
> >(press and release) the key continuously for 1 second?
> >
> >-Tony
> >
> >Anthony P. Zuccolotto
> >President and Chief Executive Officer
> >Psychology Software Tools, Inc.
> >2050 Ardmore Boulevard
> >Suite 200
> >Pittsburgh, PA 15221-4610
> >Phone     412-271-5040
> >FAX       412-271-7077
> >Email     anthony.zuccolotto at pstnet.com
> >Internet  http://www.pstnet.com
> >
> >
> >> -----Original Message-----
> >> From: eprime at mail.talkbank.org [mailto:eprime at mail.talkbank.org] On
> >Behalf
> >> Of Jeffery Jankowski
> >> Sent: Monday, June 12, 2006 9:55 AM
> >> To: eprime at mail.talkbank.org
> >> Subject: Keypress
> >>
> >>
> >> I am writing a RT program in which I would like the participant to
> >press a
> >> key continuously for 1 sec to initiate a trial.  Is there an easy
way
> >to
> >> do
> >> this?
> >>
> >> Thanks, Jeff Jankowski
> >>
> >> Albert Einstein Coll. Med.
> >> Bronx, NY
> >>
> >> Dr. Jeffery J. Jankowski
> >> Kennedy Center - Room 235
> >> Albert Einstein College of Medicine
> >> 1300 Morris Park Avenue
> >> Bronx, NY 10461
> >> Ph: (718) 430-2463
> >>
> >>
> >>
> >>
> >
> >
> >
> 
> Dr. Jeffery J. Jankowski
> Kennedy Center - Room 235
> Albert Einstein College of Medicine
> 1300 Morris Park Avenue
> Bronx, NY 10461
> Ph: (718) 430-2463
> 
> 
>