Question

[Michiel Spape]

Hi,

If you have a list with 2 options (expected and unexpected), and both of these are nested lists, you can just set the weight of the former to 3 and the latter to one. That way, there's a 1 in 4 chance of a cue being unexpected (i.e. 25%). This is almost literally explained in the infamous E-Primer: www.cognitology.eu, find pdf somewhere down the bottom of my cv (takes some time to load, often better to right-click save-as). 

Best,

Mich

 

Michiel Spapé

Research Fellow

Perception & Action group

University of Nottingham

School of Psychology

 

From: e-prime at googlegroups.com [mailto:e-prime at googlegroups.com] On Behalf Of atieh bakhtiar
Sent: 02 July 2010 14:16
To: e-prime at googlegroups.com
Subject: Question

 

Hi

I want to want to build a task which begins with the serial presentation of three words followed by a bias cue. Subjects use this cue to select or prepare the expect response.Following a 3s delay , a response cue gives 1.5 s to respond .there are two types of response cues , with each cueing an Expected or Unexpected response ,resulting in four conditions at responses.When a word (repeat ) cue was presented at response , subjects covertly repeated the word and pressed a button. On 75% of repeat trials , the word cued the Expected response, on 25% of trials , the response has to be unexpected . I want to know how can I build this task to show 75% Expected and25% Unexpected... I mean how can I determin percentage of them?

Thanks


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