Listening span in E-prime (any help would be very valuable to me)

[David McFarlane]

Q1:  You already have the OnsetTime for the stimulus that asks the 
question, now the challenge is to detect the beginning of silence at 
the end of an utterance -- sort of an inverse voice-key.  I wonder 
what happens if you use the SRBox voice key and set E-Prime to detect 
"releases" rather than "presses"?  But then what about the silences 
between words?  I cannot think of a simple solution, hope someone 
else weighs in.  Having the subject press (or release) a key at the 
end of the utterance offers a crude solution, but with many 
drawbacks.  Alternatively, have the experimenter accompany the 
subject during the run, listen to the subject's responses, and press 
(or release) a key or button at the end of the subject's vocal 
response during each trial.  This, of course, presents other problems as well.

Q2: I don't quite follow this question, sorry.

<editorial>
And why do folks here fret so much about "deadlines"?  Relax.  The 
fate of the universe does not hinge on your experiment.  To the 
contrary, back when I was a graduate student, my advisor advised me 
to slow down, for "science is a deliberative process".  Have things 
changed so much?  Rome wasn't build in a day, and neither was any 
worthwhile research program.
</editoral>

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

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At 1/10/2013 01:27 PM Thursday, Alexa_s wrote:
>I am also a novice in E-prime...so I am in big need of any advice, 
>clarification, input. What I want to do is to make a Listening span 
>task in E-prime with the main purpose of collecting response time 
>from the moment the audio input is played till the subject has 
>responded. Also I would like to collect true/false answers.
>
>As you probably all of you know, a listening span task has this structure:
>1) a spoken sentence appears like  "oranges are made of iron" (then 
>the participant would have to indicate by pressing the key that 
>means true or the one that means false)
>2) has to memorize the word "iron" and say it at the end of the trial
>There are trials with 1 sentence till 6 sentences long where subject 
>has to decide if it's right or false and at the end of the sentences 
>presentation to recall the last word from each sentence.
>
>  I have the following concerns:
>(Q1) How can I measure in each trial the reaction time from the 
>moment the subject is asked to recall till the moment he finished 
>saying the remembered words?
>  should I ask him to press a key before and after he finished recalling?
>
>(Q2) How can I insert two types of slideStates, one referring to 
>which key the subject should press for True/false answer and one 
>with asking him to recall the words? and keep them in the right 
>order of appearence?
>
>I know the questions might seem super simple but I'm quite stuck in 
>these parts and I have a very soon deadline to finish the tasks:(. 
>If anyone can clarify at least one concern by explaining more or 
>sending me to the right source, anything, I would appreciate it greatly....

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