Millisecond Forums

Hello Dave - I have one question in regard to your programmed text. What is the "value" option? Does it count the number of repetitions the participant chooses? Thank you very much in advance for your anser! Best regards.

Hello Dave,

thank you very much for your kind help. As you might anticipated I am not a "branch-expert" . I tried to derive the elements from the Inquisit 4 Documentation, but still - the branch feature is a big question mark to me.

I am working on it :-) ! Again: Thank you very much!

I'm not sure why you would want or need correctstreak here  Also,

trial.mytrial.correctstreak

doesn't seem to make any sense as there is no <trial> element called "mytrial" in your code. Finally, you are not using the proper operators in your /branch conditions. '=' is the *assignment* operator, what you need, however, is the *logical* operator '=='.

Simply have the trial /branch according to either the trial's response or correct property. Here's an example using <text> elements instead of <video> (it works the same when using <video> stimuli):

<text repeat_question>
/ items = ("Press L to repeat the video. Press A to move on.")
</text>

<text question_about_video>
/ items = ("Imagine question about the video here...")
</text>

<values>
/ kein_tor_item = 1
/ tor_item = 1
</values>

<text Videos_kein_Tor>
/ items = ("Kein Tor 1", "Kein Tor 2", "Kein Tor 3", "Kein Tor 4")
/ select = values.kein_tor_item
</text>

<list kein_tor>
/ poolsize = 4
</list>

<text Videos_Tor>
/ items = ("Tor 1", "Tor 2", "Tor 3", "Tor 4")
/ select = values.tor_item
</text>

<list tor>
/ poolsize = 4
</list>

<trial playvideo_kein_Tor>
/ ontrialbegin = [if (trial.repeat_kein_tor.response!=38) values.kein_tor_item=list.kein_tor.nextindex]
/ stimulustimes = [0=Videos_kein_Tor]
/ timeout = 1000
/ validresponse = (noresponse)
/ branch = [if(script.currentblock=="experimentblock_mit_wiederholung")trial.repeat_kein_Tor else trial.showquestionaboutmyvideo]
</trial>

<trial repeat_kein_Tor>
/ stimulusframes = [1=repeat_question]
/ validresponse = (30,38)
/ branch = [if(trial.repeat_kein_tor.response==30) trial.showquestionaboutmyvideo else trial.playvideo_kein_tor]
</trial>

<trial playvideo_Tor>
/ ontrialbegin = [if (trial.repeat_tor.response!=38) values.tor_item=list.tor.nextindex]
/ stimulustimes = [0=Videos_Tor]
/ timeout = 1000
/ validresponse = (noresponse)
/ branch = [if(script.currentblock=="experimentblock_mit_wiederholung")trial.repeat_Tor else trial.showquestionaboutmyvideo]
</trial>

<trial repeat_Tor>
/ stimulusframes = [1=repeat_question]
/ validresponse = (30,38)
/ branch = [if(trial.repeat_tor.response==30) trial.showquestionaboutmyvideo else trial.playvideo_tor]
</trial>

<trial showquestionaboutmyvideo>
/ stimulustimes = [0=question_about_video]
/ validresponse = ("a", "l")
/ correctresponse = ("a", "l")
</trial>

<block experimentblock_ohne_wiederholung>
/ trials = [1-8=noreplace(playvideo_kein_Tor, playvideo_Tor)]
</block>

<block experimentblock_mit_wiederholung>
/ trials = [1-8=noreplace(playvideo_kein_Tor, playvideo_Tor)]
</block>

<expt>
/blocks=[1=experimentblock_ohne_wiederholung; 2=experimentblock_mit_wiederholung; ]
</expt>