Millisecond Forums

See e.g. https://millisecond.com/forums/Topic9084.aspx#9084. Or you could always manually count up your streak using values / expressions / ontrialend and use that instead.

Hi Dave,

Thanks for your quick response! I am still very uncertain of how to do this. 

Could you please give me an example of how to manually count up the streak for the code below: ?

I need a correct streak of 8, only including the target1corrleft and target1corrright trials (not including the other trials which are feedback trials - although the appropriate feedback trial must occur after a response in the target trial even when the streak is up)

<trial happy1left>

/stimulustimes = [0=happy1left; 0=target2right; 0=correctsignal]

/timeout = 1500

/correctresponse = (noresponse)

</trial>

<trial angry1left>

/stimulustimes = [0=angry1left; 0=target2right; 0=correctsignal]

/timeout = 1500

/correctresponse = (noresponse)

</trial>

<trial happy1right>

/stimulustimes = [0=happy1right; 0=target2left; 0=correctsignal]

/timeout = 1500

/correctresponse = (noresponse)

</trial>

<trial angry1right>

/stimulustimes = [0=angry1right; 0=target2left; 0=correctsignal]

/timeout = 1500

/correctresponse = (noresponse)

</trial>

<trial target1corrleft> 

/ validresponse = (lbuttondown, rbuttondown)

/correctresponse = (lbuttondown)

/inputdevice = mousekey

/pretrialpause =1000

/stimulustimes = [0=target1left; 0=target2right; 0=stimulussignal]

/ responsetrial = ("lbuttondown", happy1left)

/ responsetrial = ("rbuttondown", angry2right)

</trial>

<trial target1corrright> 

/ validresponse = (lbuttondown, rbuttondown)

/inputdevice = mousekey

/pretrialpause =1000

/ correctresponse = (rbuttondown)

/stimulustimes = [0=target1right; 0=target2left; 0=stimulussignal]

/ responsetrial = ("lbuttondown", angry2left)

/ responsetrial = ("rbuttondown", happy1right)

</trial>

<block 1>

/ trials = [1-30 = noreplace (target1corrleft, target1corrright)]

/stop = [block.1.correctstreak == 16]

</block>

<values>
/ ncorrectinarow = 0
</values>

<trial happy1left>
/ ontrialend = [if (block.1.correct) values.ncorrectinarow +=1 else values.ncorrectinarow=0]
/ stimulusframes = [1=debug]
/ timeout = 1500
/ validresponse = (noresponse)
/ iscorrectresponse = [block.1.correct]
</trial>

<trial angry1left>
/ ontrialend = [if (block.1.correct) values.ncorrectinarow +=1 else values.ncorrectinarow=0]
/ stimulusframes = [1=debug]
/ timeout = 1500
/ validresponse = (noresponse)
/ iscorrectresponse = [block.1.correct]
</trial>

<trial happy1right>
/ ontrialend = [if (block.1.correct) values.ncorrectinarow +=1 else values.ncorrectinarow=0]
/ stimulusframes = [1=debug]
/ timeout = 1500
/ validresponse = (noresponse)
/ iscorrectresponse = [block.1.correct]
</trial>

<trial angry1right>
/ ontrialend = [if (block.1.correct) values.ncorrectinarow +=1 else values.ncorrectinarow=0]
/ stimulusframes = [1=debug]
/ timeout = 1500
/ validresponse = (noresponse)
/ iscorrectresponse = [block.1.correct]
</trial>
 
<trial target1corrleft>
/ validresponse = (lbuttondown, rbuttondown)
/ correctresponse = (lbuttondown)
/ inputdevice = mousekey
/ pretrialpause =1000
/ stimulusframes = [1=debug]
/ responsetrial = ("lbuttondown", happy1left)
/ responsetrial = ("rbuttondown", angry1right)
</trial>

<trial target1corrright>
/ validresponse = (lbuttondown, rbuttondown)
/ inputdevice = mousekey
/ pretrialpause =1000
/ correctresponse = (rbuttondown)
/ stimulusframes = [1=debug]
/ responsetrial = ("lbuttondown", angry1left)
/ responsetrial = ("rbuttondown", happy1right)
</trial>

<block 1>
/ trials = [1-30 = noreplace (target1corrleft, target1corrright)]
/ stop = [values.ncorrectinarow == 8]
</block>

<text debug>
/ items = ("<%script.currenttrial%>|Streak=<%values.ncorrectinarow%>")
</text>

Thanks Dave!

I have now added my second block onto this script...but it doesn't run properly.

Could you suggest what I might have done wrong? (script below)

Thanks!

<values>

/ ncorrectinarow = 0

</values>

<trial happy1left>

/stimulustimes = [0=happy1left; 0=target2right; 0=correctsignal]

/timeout = 1000

/ validresponse = (noresponse)

/ ontrialend = [if (block.1.correct) values.ncorrectinarow +=1 else values.ncorrectinarow=0]

/ iscorrectresponse = [block.1.correct]

</trial>

<trial happy1right>

/stimulustimes = [0=happy1right; 0=target2left; 0=correctsignal]

/ ontrialend = [if (block.1.correct) values.ncorrectinarow +=1 else values.ncorrectinarow=0]

/timeout = 1000

/ validresponse = (noresponse)

/ iscorrectresponse = [block.1.correct]

</trial>

<trial angry2left>

/stimulustimes = [0=angry2left; 0=target1right; 0=correctsignal]

/timeout = 1000

/ validresponse = (noresponse)

/ ontrialend = [if (block.1.correct) values.ncorrectinarow +=1 else values.ncorrectinarow=0]

/ iscorrectresponse = [block.1.correct]

</trial>

<trial angry2right>

/stimulustimes = [0=angry2right; 0=target1left; 0=correctsignal]

/timeout = 1000

/ validresponse = (noresponse)

/ ontrialend = [if (block.1.correct) values.ncorrectinarow +=1 else values.ncorrectinarow=0]

/ iscorrectresponse = [block.1.correct]

</trial>

<trial target1corrleft> 

/ validresponse = (lbuttondown, rbuttondown)

/correctresponse = (lbuttondown)

/inputdevice = mousekey

/pretrialpause =1000

/stimulustimes = [0=target1left; 0=target2right; 0=stimulussignal]

/ responsetrial = ("lbuttondown", happy1left)

/ responsetrial = ("rbuttondown", angry2right)

</trial>

<trial target1corrright> 

/ validresponse = (lbuttondown, rbuttondown)

/inputdevice = mousekey

/pretrialpause =1000

/ correctresponse = (rbuttondown)

/stimulustimes = [0=target1right; 0=target2left; 0=stimulussignal]

/ responsetrial = ("lbuttondown", angry2left)

/ responsetrial = ("rbuttondown", happy1right)

</trial>

<trial happy2left>

/stimulustimes = [0=happy2left; 0=target1right; 0=correctsignal]

/timeout = 1000

/ validresponse = (noresponse)

/ ontrialend = [if (block.2.correct) values.ncorrectinarow +=1 else values.ncorrectinarow=0]

/ iscorrectresponse = [block.2.correct]

</trial>

<trial happy2right>

/stimulustimes = [0=happy2right; 0=target1left; 0=correctsignal]

/timeout = 1000

/ validresponse = (noresponse)

/ ontrialend = [if (block.2.correct) values.ncorrectinarow +=1 else values.ncorrectinarow=0]

/ iscorrectresponse = [block.2.correct]

</trial>

<trial angry1right>

/stimulustimes = [0=angry1right; 0=target2left; 0=correctsignal]

/ ontrialend = [if (block.2.correct) values.ncorrectinarow +=1 else values.ncorrectinarow=0]

/timeout = 1000

/ validresponse = (noresponse)

/ iscorrectresponse = [block.2.correct]

</trial>

<trial angry1left>

/stimulustimes = [0=angry1left; 0=target2right; 0=correctsignal]

/ ontrialend = [if (block.2.correct) values.ncorrectinarow +=1 else values.ncorrectinarow=0]

/timeout = 1000

/ validresponse = (noresponse)

/ iscorrectresponse = [block.2.correct]

</trial>

<trial target2corrleft> 

/ validresponse = (lbuttondown, rbuttondown)

/correctresponse = (lbuttondown)

/inputdevice = mousekey

/pretrialpause =1000

/stimulustimes = [0=target2left; 0=target1right; 0=stimulussignal]

/ responsetrial = ("lbuttondown", happy2left)

/ responsetrial = ("rbuttondown", angry1right)

</trial>

<trial target2corrright> 

/ validresponse = (lbuttondown, rbuttondown)

/correctresponse = (rbuttondown)

/inputdevice = mousekey

/pretrialpause =1000

/stimulustimes = [0=target2right; 0=target1left; 0=stimulussignal]

/ responsetrial = ("lbuttondown", angry1left)

/ responsetrial = ("rbuttondown", happy2right)

</trial>

<block 1>

/ trials = [1-30 = noreplace (target1corrleft, target1corrright)]

/ stop = [values.ncorrectinarow == 3]

</block>

<block 2>

/ trials = [1-30 = noreplace (target2corrleft, target2corrright)]

/ stop = [values.ncorrectinarow == 3]

</block>

Which means?

#1: You need an <expt> element to run several blocks.

#2: You need to reset the value back to zero /onblockbegin.