hiding "openended" textbox within a trial

nrouhani — Wed, 02 Aug 2017 16:15:54 GMT

hello!

I am currently attempting to create a trial structure in which (1) stimulus 1 appears, (2) stimulus 1 disappears + a response textbox appears, (3) textbox disappears + stimulus 2 appears.

It seems that I can't hide the textbox within a trial when I use "openended" (I need the textbox to be absent both at the beginning and the end of the trial) - is there a solution for this?

Otherwise, would I have to set up the above three phases as different trial types? If so, within a "block", is there a way to go through a sequence of distinct trial types instead of having to specify the type of trial for each trial number? Or does it have to look something like this?
<block block1>
/ trials = [1,4,7 = sequence(cue); 2,5,8 = sequence(myopenended); 3,6,9 = sequence(outcome)]
</block>

Thank you so much for your help!

RE: hiding "openended" textbox within a trial

Dave — Wed, 02 Aug 2017 16:15:54 GMT

[quote]

[b]nrouhani - Wednesday, August 2, 2017[/b]

[/quote]

You can handle phases 1 and 2 in a single <openended> element if you wish, but you can use a <trial> for phase 1 and an <openended> for phase 2, too, if that's more to your liking. For phase 3, you would need a distinct trial. You can "chain" those trials using /branch, and you would only have to select the 1st trial in the chain in your <block>. In essence:

<openended a1>
/ stimulustimes = [0=astim1; 2000=clearscreen]
...
/ branch = [
    trial.a2
]
</openended>

<trial a2>
/ stimulustimes = [0=astim2]
...
</trial>

<openended b1>
/ stimulustimes = [0=bstim1; 2000=clearscreen]
...
/ branch = [
    trial.b2
]
</openended>

<trial b2>
/ stimulustimes = [0=bstim2]
...
</trial>

<block myblock>
/ trials = [
    1-10 = noreplace(a1,b1)
]
</block>

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hiding "openended" textbox within a trial

RE: hiding "openended" textbox within a trial