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Pseudo-random Trial Presentation

ivy.c — Mon, 11 Apr 2022 22:46:06 GMT

Hello,

I’m currently trying to create a pseudo-random order of the trials I present in a block (pasted below). Specifically, I would like the trials to be presented where there are no more than 5 consecutive “AX_Short_No” trials or two consecutive trials of another type (“AY_Short_No”, “BX_Short_No”, “BY_Short_No”).

<block shortnoreward_final>
/ preinstructions = (intro2)
/ trials = [1-100 = noreplace(AX_Short_No,AX_Short_No,AX_Short_No,AX_Short_No,BX_Short_No,AY_Short_No,BY_Short_No,BY_Short_No,BY_Short_No,BY_Short_No)]
/ onblockend = [list.corrRT_baseline_short.sort(false,false);
values.index = 3;
values.cutoff_RT = list.corrRT_baseline_short.item(values.index);
]
</block>

Any help regarding this would be much appreciated! Thank you!

RE: Pseudo-random Trial Presentation

Dave — Mon, 11 Apr 2022 22:46:06 GMT

+x[quote]

[b]ivy.c - 4/11/2022[/b]
+x[quote]

[b]Dave - 4/11/2022[/b]
+x[quote]

[b]ivy.c - 4/11/2022[/b]
Hello,

I’m currently trying to create a pseudo-random order of the trials I present in a block (pasted below). Specifically, I would like the trials to be presented where there are no more than 5 consecutive “AX_Short_No” trials or two consecutive trials of another type (“AY_Short_No”, “BX_Short_No”, “BY_Short_No”).

<block shortnoreward_final>
/ preinstructions = (intro2)
/ trials = [1-100 = noreplace(AX_Short_No,AX_Short_No,AX_Short_No,AX_Short_No,BX_Short_No,AY_Short_No,BY_Short_No,BY_Short_No,BY_Short_No,BY_Short_No)]
/ onblockend = [list.corrRT_baseline_short.sort(false,false);
values.index = 3;
values.cutoff_RT = list.corrRT_baseline_short.item(values.index);
]
</block>

Any help regarding this would be much appreciated! Thank you!
[/quote]

If you can come up with an algorithm that generates sequences adhering to these constraints, I can show you how to implement it. Other than that, there are no bullt-in means to achieve what you want.
[/quote]

Hi Dave,

Thanks for the response. Could you clarify what you mean by an algorithm on my end? My coding knowledge is rather limited!

Thank you!
[/quote]

An algorithm is a process or set of rules to be followed in calculations or other problem-solving operations: It generates a solution for a specific problem. If you can spell out a process, step-by-step, that generates a sequence "where there are no more than 5 consecutive “AX_Short_No” trials or two consecutive trials of another type (“AY_Short_No”, “BX_Short_No”, “BY_Short_No”)" then I can show you how to express that process in Inquisit syntax.

RE: Pseudo-random Trial Presentation

ivy.c — Mon, 11 Apr 2022 22:37:32 GMT

+x[quote]

[b]Dave - 4/11/2022[/b]
+x[quote]

[b]ivy.c - 4/11/2022[/b]
Hello,

I’m currently trying to create a pseudo-random order of the trials I present in a block (pasted below). Specifically, I would like the trials to be presented where there are no more than 5 consecutive “AX_Short_No” trials or two consecutive trials of another type (“AY_Short_No”, “BX_Short_No”, “BY_Short_No”).

<block shortnoreward_final>
/ preinstructions = (intro2)
/ trials = [1-100 = noreplace(AX_Short_No,AX_Short_No,AX_Short_No,AX_Short_No,BX_Short_No,AY_Short_No,BY_Short_No,BY_Short_No,BY_Short_No,BY_Short_No)]
/ onblockend = [list.corrRT_baseline_short.sort(false,false);
values.index = 3;
values.cutoff_RT = list.corrRT_baseline_short.item(values.index);
]
</block>

Any help regarding this would be much appreciated! Thank you!
[/quote]

If you can come up with an algorithm that generates sequences adhering to these constraints, I can show you how to implement it. Other than that, there are no bullt-in means to achieve what you want.
[/quote]

Hi Dave,

Thanks for the response. Could you clarify what you mean by an algorithm on my end? My coding knowledge is rather limited!

Thank you!

RE: Pseudo-random Trial Presentation

Dave — Mon, 11 Apr 2022 22:29:16 GMT

+x[quote]

[b]ivy.c - 4/11/2022[/b]
Hello,

I’m currently trying to create a pseudo-random order of the trials I present in a block (pasted below). Specifically, I would like the trials to be presented where there are no more than 5 consecutive “AX_Short_No” trials or two consecutive trials of another type (“AY_Short_No”, “BX_Short_No”, “BY_Short_No”).

<block shortnoreward_final>
/ preinstructions = (intro2)
/ trials = [1-100 = noreplace(AX_Short_No,AX_Short_No,AX_Short_No,AX_Short_No,BX_Short_No,AY_Short_No,BY_Short_No,BY_Short_No,BY_Short_No,BY_Short_No)]
/ onblockend = [list.corrRT_baseline_short.sort(false,false);
values.index = 3;
values.cutoff_RT = list.corrRT_baseline_short.item(values.index);
]
</block>

Any help regarding this would be much appreciated! Thank you!
[/quote]

If you can come up with an algorithm that generates sequences adhering to these constraints, I can show you how to implement it. Other than that, there are no bullt-in means to achieve what you want.