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Group: Administrators
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Visits: 98K
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Here's a simple, self-contained example for the 2nd (more complicated) option using /isvalidresponse:
<values>
/ spacebarpresscount = 0
/ latencies = ""
</values>
<block myblock>
/ trials = [1-2=mytrial]
</block>
<trial mytrial>
/ ontrialbegin = [values.spacebarpresscount=0; values.latencies=""; ]
/ stimulusframes = [1=mytext]
/ trialduration = 5000
/ validresponse = (57)
/ isvalidresponse = [if(trial.mytrial.response==57){values.spacebarpresscount += 1; values.latencies=concat(concat(values.latencies, trial.mytrial.latency),","); false}; ]
</trial>
<text mytext>
/ items = ("Imagine a video being played...", "Imagine another video being played")
/ select = sequence
</text>
<data>
/ columns = [date time subject group blocknum blockcode trialnum trialcode response latency values.spacebarpresscount values.latencies]
/ separatefiles = true
</data>
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