voice-over and time beam

[ben robinson]

one more thing.if you'd like a visible "time beam" you could perform
basically the same calculation at the end of each trial as described by
michiel (CurrentTrial/TotalTrials), but multiply that product by, say, the
screen width.  then send that value to your running list, and have a
TextObject imbedded in a SlideObject that pulls its width value from the
running list.  so, you'd need to add a column to the List that runs your
trials, and call the column "TimeBeam".  then at the end of each trial
update the value you want for the width of the TimeBeam TextObject.

CONST TotalTrials = 288 'put this in the user tab
Dim CurrentTrial as Integer 'put this in the user tab
Dim BeamWidth as Integer 'put this in the user tab

'in the Slide presenting your trial screen have a TextObject devoted
strictly to being your TimeBeam, and set the value for width for this
TextObject to [TimeBeam] so that it pulls this value from the List...

'in an Inline at the end of each trial:
CurrentTrial = CurrentTrial+1
BeamWidth = CurrentTrial/TotalTrials*Display.XRes
c.SetAttrib "TimeBeam", BeamWidth

On Thu, Mar 12, 2009 at 12:12 PM, Spape, Michiel
<MSpape at fsw.leidenuniv.nl>wrote:

> Hi Bas,
> 1. Just record (windows sound recorder, for example) your voice saying the
> instruction and add the wav resulting from that as a sound sub-object to the
> slide with the instruction. Or, just tell them - it's always best to let a
> person be there and instruct the participant, so you can be more sure that
> they understand it. Never underestimate how difficult your experiment may
> appear to your participants, and take your time: possibly, the best way is
> to let your participant repeat in their own words what they have to do.
>
> 2. If you have, say, 288 trials in your experiment, add some text-display
> in your trial, calling it, for example, Intertrialinterval (that is, i'd
> suggest adding this to your feedback, but in the absence of that, this may
> sometimes do). Declare an integer variable in the user script (e.g. Alt+5,
> then write: 'dim trialcounter as integer') and add an inline object just
> before the intertrialinterval and write something like:
> trialcounter = trialcounter + 1
> Intertrialinterval.text = "You have succesfully completed " & (trialcounter
> / 288) * 100 & " % of the experiment, only " & " 288 - trialcounter & "
> trials to go!"
>
> Hope that helps.
> Best,
> Mich
>
> ________________________________
>
> Van: e-prime at googlegroups.com namens Bas en Oisin
> Verzonden: do 12-3-2009 17:03
> Aan: E-Prime
> Onderwerp: voice-over and time beam
>
>
>
>
> Dear Pro`s with E-Prime!
>
> My name is Bas Hartel en together with Oisin Bugter we do research at
> the University of Amsterdam. We are two medecine students. We measure
> the reaction time of patient with a very simple e-prime experiment. We
> have althought two questions:
>
> First of all, we have severall slides with the explanation of the test
> for the patient. To be sure that the information is well understood we
> would like to put a voice-over together with the slides. Is this
> possible with E-prime?And if yes, could anyone please explain to us
> how to do it?
>
>
> Then we would like to add a time beam. The test being very boring, the
> patient have an idea how long it will take to finish it.
>
> I hope you can provide me with some answers,
>
> greetings,
>
>
> Bas and Oisin
>
>
>
>
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