Sequential stimuli thats randomized

[Tony Zuccolotto]

Khalilah,

 

The easiest way to do this is probably to use Nested lists, e.g. create
1 List for each of your 12 groups that you want to present.   You then
have 12 entries on your Block level list that correspond one to each
group.   Create an attribute on the Block level list (e.g. "StimList")
which contains the name of the list you want to use/associate with each
group (e.g. List1, List2, List3, ..., List12).    Then on the Trial
level list specify [StimList] in the Nested column and set the Weight to
12.    This setup will randomly choose a set of stimuli to use and then
run 12 sequential trials using the chosen "StimList" to provide the
trial stimuli.

 

Take a look at the NestingRT example included as an E-Prime sample
experiment to see how Nesting can be used.   The main difference between
that example and what you want to do is that the example has the names
of the nested lists specified explicitly, whereas in your experiment you
want to specify the name of the nested list as an attribute [StimList]

 

Hope that helps,

Tony

 

*** DISCLAIMER: ALL VIEWS EXPRESSED ARE MY OWN AND DO NOT NECESSARILY
REFLECT THOSE OF PSYCHOLOGY SOFTWARE TOOLS ***

 

Anthony P. Zuccolotto

Vice President

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 <http://www.pstnet.com/> 

 

-----Original Message-----
From: Khalilah Khan [mailto:K.Khan at warwick.ac.uk] 
Sent: Tuesday, January 13, 2004 8:55 AM
To: <
Subject: Sequential stimuli thats randomised

 

Hello e-prime users

 

I have a list of 144 stimuli that I wish to present. There are 12 images
each in the 12 groups. I wish to run 12 images in sequential order but
then wish to randomise the groups. How can I do this?

Thank you for your help.

 

Khalilah Khan

 

IACS, Psychology

University of Warwick

Coventry

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listserv.linguistlist.org/pipermail/eprime/attachments/20040113/90558219/attachment.htm>