Millisecond Forums

Need help changing trials to 160 instead of 80 - can't see where I need to edit!

https://forums.millisecond.com/Topic26951.aspx

By stefaniafranja - 5/13/2019

Hello, 
I have taken an existing Alcohol probe (pictorial) task, and had success editing images, and parameters in the task. Although I have placed additional images in the list, and edited item numbers list to have additional repetitions, I am still only ending up with 80 trials, when I am hoping to have 160 trials. 

Everything else is working as it should - just not sure where/ how to double the amount of trials.

Any help much appreciated!
stef
By Dave - 5/13/2019

stefaniafranja - Monday, May 13, 2019
Hello, 
I have taken an existing Alcohol probe (pictorial) task, and had success editing images, and parameters in the task. Although I have placed additional images in the list, and edited item numbers list to have additional repetitions, I am still only ending up with 80 trials, when I am hoping to have 160 trials. 

Everything else is working as it should - just not sure where/ how to double the amount of trials.

Any help much appreciated!
stef

If you want the test block to run 160 trials, you need to change

Note: presents 80 trials (trial order is determined randomly)
<block ImageDotProbeTask>
/ onblockbegin = [values.task = 2]
/ trials = [1-80 = noreplace(Alcohol, Filler)]
</block>

to

Note: presents 80 trials (trial order is determined randomly)
<block ImageDotProbeTask>
/ onblockbegin = [values.task = 2]
/ trials = [1-160 = noreplace(Alcohol, Filler)]
</block>