Millisecond Forums

Hi. I am trying to get a conditional branch to work. 3 sentences are presented. For only some of the sentences there is a comprehension question. I've tried to achieve this using a conditional statement so that the question trial is triggered only when the question item is not an empty string (/ branch = [if(text.question != "")trial.questionTrial]). However, the question trial is triggered all the time.

Is there a problem with my conditional statement?

Thanks

Nick




<item sentences>
/ 1 = "A dog is a canine"
/ 2 = "A cat is a feline"
/ 3 = "A bear is ursine"
</item>

<item questions>
/ 1 = ""
/ 2 = "Did this sentence mention a cat?"
/ 3 = ""
</item>

<text sentence>
/ items = sentences
/ select = sequence
</text>

<text question>
/ items = questions
/ select = text.sentence.currentindex
</text>

<trial sentenceTrial>
/ stimulusframes = [1 = sentence]
/ validresponse = ("Y", "N")
/ branch = [if(text.question != "")trial.questionTrial]
</trial>

<trial questionTrial>
/ stimulusframes = [1 = question]
/ validresponse = ("Y", "N")
</trial>

<block block>
/ trials = [1-3 = sentenceTrial]
</block>

<expt expt>
/ blocks = [1 = block]
</expt>