Delayed Matching to Sample

[Ben Meyers]

The delay part is not really that complicated depending on what method
you are using to display your stimulus and comparisons.  Since I don't
know exactly how your experiment is implemented I can only give you a
few ideas of the different methodologies.

1) Sleep(nTime)   'placed in an InLine script the script will hang for
the msec duration of nTime
2) Clock.Read 'returns a value in msec of the session duration I
believe
3) You can of course alter the duration of an image display in the
properties window for an Image Display
4) You can put in a wait object with a specified duration.

Whatever you're doing, you don't want to clear the stimulus canvas
until you want it to disappear so Clear After should be No.

Hope that helps, if not a few more specifics would allow a better
response.

On Jul 7, 11:49 am, jongretar <jon.sigurjons... at gmail.com> wrote:
> Hi E-Primers,
>
> I'm having difficulty figuring out how to tell E-Prime to do a delayed
> Matching to Sample (MTS) procedure. My protocol is like this:
>
> A sample (A1, A2 or A3) is presented at the top of the screen
> 500 ms ISI
> Two comparisons appear below the sample with the sample still visible
> till the participant chooses one of the comparisons.
> The sample will be one of three possible images (A1, A2 and A3) while
> the correct comparison will be either B1 B2 or B3 (depending on the
> sample) and the other comparison will be a foil.
>
> I've figured out how to do this using a regular MTS procedure but the
> delayed part is giving me a headache. Any ideas?
>
> Thanks a million,
> Jón
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