Millisecond Forums » Millisecond Forums » Inquisit 5 » Fixation point & Picture Pairs all off after changing number of trials

Fixation point & Picture Pairs all off after changing number of trials

stefaniafranja — Wed, 15 May 2019 18:36:19 GMT

Hello Dave,
Thank you for your previous post about how to change the number of trials.
Now that I successfully have the amount of trials (yay!), I am finding that some of the picture pairs are presented 6 times, and some are presented 2 times, whereas each picture pair should be presented 4 times. I understand this is probably to do with how I have edited the item_numbers list:
Orignially, it had:
Alcohol_target_itemnumbers
/ items = (
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10)

Filler_target_itemnumbers
/ items = (
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10)

Basically, meaning there will be 40 critical, and 40 control trials, resulting in 80 total.

When I edited it for my own task, I need 160 trials instead of 80, so I simply edited the lists as follows:
Alcohol_target_itemnumbers
/ items = (
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
Filler_target_itemnumbers
/ items = (
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)

Essentially, this should result in each picture pair being presented 4 times. But for some reason, when I (painfully) counted each picture pair, some were presented only once, some were presented twice, some three times, some 4 times, some 5 times... up to 7 times for some. I am not sure why this is the case, when all i have done is doubled what was initially there.

ALSO!
Since changing the
/ trials = [1-80] to
/ trials = [1-160],
The probe is now only on the left?? Through the whole task!

Man, I am feeling really useless at the moment, and any suggestions you have are most welcome!

Thanks in advance,
stefania

RE: Fixation point & Picture Pairs all off after changing number of trials

stefaniafranja — Wed, 15 May 2019 18:36:19 GMT

[quote]

[b]Dave - Wednesday, May 15, 2019[/b]

[quote]

[b]stefaniafranja - Wednesday, May 15, 2019[/b]

[quote]

[b]stefaniafranja - Wednesday, May 15, 2019[/b]

[/quote]

I have tried to delete this post (don't know how) as i have found the error of my ways! It is now fixed. Apologies!

[/quote]

I'm glad you were able to find the error and I can delete this thread if you want to, just let me know. One remark for any future similar queries, though, if I may: While including some code excerpts highlighting some of the things you changed is very useful, I will usually also need the actual full script as well as all external files (images, etc.) the script needs to run to diagnose a given problem and/or find and fix any mistakes. Please put these things in a ZIP file and then you can attach that to your post by clicking +Insert -> Add File...

Thanks!

[/quote]

hello again,

thank you for your prompt response. I am happy for this to be up there if any information here helps others.
Just knowing that I should be uploading the zip file in future is very useful.

Thanks again!!
Stefania

RE: Fixation point & Picture Pairs all off after changing number of trials

Dave — Wed, 15 May 2019 18:33:53 GMT

[quote]

[b]stefaniafranja - Wednesday, May 15, 2019[/b]

[quote]

[b]stefaniafranja - Wednesday, May 15, 2019[/b]

[/quote]

I have tried to delete this post (don't know how) as i have found the error of my ways! It is now fixed. Apologies!

[/quote]

RE: Fixation point & Picture Pairs all off after changing number of trials

stefaniafranja — Wed, 15 May 2019 17:11:55 GMT

[quote]

[b]stefaniafranja - Wednesday, May 15, 2019[/b]

[/quote]

I have tried to delete this post (don't know how) as i have found the error of my ways! It is now fixed. Apologies!