Question

[atieh bakhtiar]

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


-- 
Atieh Bakhtiar

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