response unit for E-prime 2.0 Professional with ERP hardware

[David McFarlane]

I like Ben's suggestion of the Logitech Precision Gamepad, may want 
to use that myself some time...

At 6/19/2012 02:43 PM Tuesday, Chris Jones wrote:
>I'd also like to thank Ben very much for this information.  I came 
>to this group looking for instructions on how to build a serial or 
>parallel response box.  My department won't be able to approve a 
>response box until the fall and I want some data now...

... but since you mention that, for the record a "parallel" response 
box is nothing more than some passive switches connected to a 
suitable digital I/O port.  I have made several of these for our use, 
parts might run about US$30-40 (most of that just for the 
high-quality pushbutton switches that we use).  They offer several advantages:

- No AC cord, which addresses the concern of the original poster.
- Negligible response latency.
- Trivial for any electronic hobbyist to build (just some switches, 
wire, a box, and appropriate connectors).
- Can use buttons with mechanical characteristics that suit you.
- Can use custom number of buttons and layout.

Some disadvantages:

- Does require access to someone with basic electronic hobbyist 
skills (e.g., has a soldering tool, and knows how to use it).
- Requires a parallel port or similar plain digital I/O port, which 
modern PCs lack.
- Requires a bit more programming knowledge to get it to work with 
E-Prime or other platforms.  (We often just plug these boxes into PST 
SRBoxes to get around that, but that would defeat the purpose of the 
original posters.)

---------------
David McFarlane
E-Prime training 
online:  http://psychology.msu.edu/Workshops_Courses/eprime.aspx
Twitter:  @EPrimeMaster (twitter.com/EPrimeMaster)
---------------

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