Millisecond Forums

<values>
/ slowrespcount = 0
</values>

<block myblock>
/ trials = [1-20 = mytrial]
</block>

<trial mytrial>
/ ontrialend = [if (trial.mytrial.latency >= 600) values.slowrespcount += 1 else values.slowrespcount = 0]
/ stimulusframes = [1=mytext]
/ validresponse = (57)
/ branch = [if (values.slowrespcount >= 3) trial.tooslowtrial]
</trial>

<trial tooslowtrial>
/ ontrialend = [values.slowrespcount = 0]
/ stimulusframes = [1=tooslowtext]
/ trialduration = 500
</trial>

<text mytext>
/ items = ("Press SPACEBAR as quickly as possible.")
</text>

<text tooslowtext>
/ items = ("You're too slow.")
</text>

Thanks Dave,Tried writing values element, but couldn't do it.Can you please help with an example ? Lets say 600 ms is the ideal time to respond. And a message is displayed if subject is slow on three consecutive times .Thanks Abhi

No, you cannot use errorstreak unless you programmatically consider slow responses as errors. You will want to use <values> to keep track of consecutive "too slow" responses (whatever that may mean concretely) and then /branch to a feedback <trial> if appropriate.