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building blocks of trials

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luciano basso

building blocks of trials

Hi team,

I'm trying to write a syntax for a long time and not get success.

I have data from 200 subjects making many trials (the number is not
fixed for each subject) at two different moments - data is all in the
same column. Each trial is consists for 3 answers .. And I would like
to share the trials of each subject in 3 blocks.

I tried visual blinnig, but I can not use the filter.

I also used the RECODE, but seems to be pathetic, because we really
have to recode for each possible number of attempts, which can be from
1 to 120 ..

any ideas? please...

an example of data:

subject moment trial answer
1 1 1 1
1 1 1 1
1 1 1 1
1 1 2 1
1 1 2 2
1 2 2 2
1 2 1 3
1 2 1 2
1 2 1 2
1 2 2 1
1 2 2 4
1 2 2 2
1 2 3 1
1 2 3 2
1 2 3 4
1 2 4 4
1 2 4 4
1 2 4 2
2 1 1 1
2 1 1 1
2 1 1 1
2 1 2 2
2 1 2 2
2 1 2 2
2 1 3 1
2 1 3 1
2 1 3 2
2 2 1 3
2 2 1 4
2 2 1 1
2 2 2 2
2 2 2 3
2 2 2 4
2 2 3 1
2 2 3 2
2 2 3 2
2 2 4 4
2 2 4 4
2 2 4 4
2 2 5 4
2 2 5 4
2 2 5 4
3 1 1 4
3 1 1 4
3 1 1 3
3 1 2 3
3 1 2 2
3 1 2 2
3 1 3 2
3 1 3 1
3 1 3 1
3 1 4 1
3 1 4 2
3 1 4 2
3 1 5 4
3 1 5 4
3 1 5 4
3 2 1 4
3 2 1 4
3 2 1 4
3 2 2 4
3 2 2 4
3 2 2 4
3 2 3 4
3 2 3 2
3 2 3 1
3 2 4 2
3 2 4 2
3 2 4 1
3 2 5 2
3 2 5 1
3 2 5 4
3 2 6 1
3 2 6 4
3 2 6 1
3 2 7 2
3 2 7 2
3 2 7 3
3 2 8 2
3 2 8 2
3 2 8 4
3 2 9 1
3 2 9 2
3 2 9 4

Thanks...

Luciano Basso
University of Sao Paulo
Laboratory of Motor Behavior

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Maguin, Eugene

Re: building blocks of trials

Luciano,

Thank you for posting sample data. That helps a lot. Please explain these
two sentences: 'And I would like to share the trials of each subject in 3
blocks.' and 'Each trial is consists for 3 answers.' They are not meaningful
to me. Finally, please the result of the data transformation
operations--what does the data structure look like as a result of the
transformations.

By the way, please look at the varstocases command. This may be what you
will need to use but I am absolutely not sure.

Gene Maguin

>>I have data from 200 subjects making many trials (the number is not
fixed for each subject) at two different moments - data is all in the
same column. Each trial is consists for 3 answers .. And I would like
to share the trials of each subject in 3 blocks.

I tried visual blinnig, but I can not use the filter.

I also used the RECODE, but seems to be pathetic, because we really
have to recode for each possible number of attempts, which can be from
1 to 120 ..

an example of data:

subject moment trial answer
1 1 1 1
1 1 1 1
1 1 1 1
1 1 2 1
1 1 2 2
1 2 2 2
1 2 1 3
1 2 1 2
1 2 1 2
1 2 2 1
1 2 2 4
1 2 2 2
1 2 3 1
1 2 3 2
1 2 3 4
1 2 4 4
1 2 4 4
1 2 4 2
2 1 1 1
2 1 1 1
2 1 1 1
2 1 2 2
2 1 2 2
2 1 2 2
2 1 3 1
2 1 3 1
2 1 3 2
2 2 1 3
2 2 1 4
2 2 1 1
2 2 2 2
2 2 2 3
2 2 2 4
2 2 3 1
2 2 3 2
2 2 3 2
2 2 4 4
2 2 4 4
2 2 4 4
2 2 5 4
2 2 5 4
2 2 5 4
3 1 1 4
3 1 1 4
3 1 1 3
3 1 2 3
3 1 2 2
3 1 2 2
3 1 3 2
3 1 3 1
3 1 3 1
3 1 4 1
3 1 4 2
3 1 4 2
3 1 5 4
3 1 5 4
3 1 5 4
3 2 1 4
3 2 1 4
3 2 1 4
3 2 2 4
3 2 2 4
3 2 2 4
3 2 3 4
3 2 3 2
3 2 3 1
3 2 4 2
3 2 4 2
3 2 4 1
3 2 5 2
3 2 5 1
3 2 5 4
3 2 6 1
3 2 6 4
3 2 6 1
3 2 7 2
3 2 7 2
3 2 7 3
3 2 8 2
3 2 8 2
3 2 8 4
3 2 9 1
3 2 9 2
3 2 9 4

Thanks...

Luciano Basso
University of Sao Paulo
Laboratory of Motor Behavior

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For a list of commands to manage subscriptions, send the command
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