By tela - 9/5/2016
I am trying to introduce an artificial delay in the experiment to appear as the opponent in the game is making a decision. I tried to use posttrialpause on my surveypage element, but when I try to run the experiment, it get "posttrialpause is not a valid attribute". Why could that be?
Also, is there a way to display text for a short period without requiring the participant to respond? Ideally I'd like to show a text like "A moment, please" during the pause, which then goes away and the next trial page is displayed.
--tei
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By Dave - 9/5/2016
> "posttrialpause is not a valid attribute". Why could that be?
<surveypage>s do not have /post- or /pretrialpauses. Those attributes only apply to standard <trial>, <openended> or <likert> elements as detailed in the documentation.
You need to /branch to a standard <trial> that lasts for however long you want the artificial pause to be instead.
> Also, is there a way to display text for a short period without requiring the participant to respond? Ideally I'd like to show a text like "A
> moment, please" during the pause.
Yes, of course. You simply do:
<block someblock>
/ trials = [1=yourpage; ....]
...
</block>
<surveypage yourpage>
....
/ branch = [trial.waittrial]
</surveypage>
with
<trial waittrial>
/ stimulusframes = [1=waitmessage]
/ validresponse = (0)
/ trialduration = 3000
</trial>
<text waitmessage>
/ items = ("One moment please...")
</text>
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By tela - 9/6/2016
Thanks. It seems, I've been looking at v5 documentation where pre- and posttrialpause attributes are available.
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