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WouterDo
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Group: Forum Members
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Visits: 12
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Hi,
In the current experiment there should be 2 blocks each consisting block addressing 4 of the 8 probes. Within a block the 4 probes should be presented within 4 subblocks. Each subblock consists of 1 probe, 1 target, 4 irrelevant items and 6 filler items (2 familiar, 4 unfamiliar). Participants should respond with a left key button or familiar to all targets and familiar filler items. A right key button or unfamiliar is required for all probes, irrelevants and unfamiliar items.
The 2 blocks should be randomized as well as the subblocks.
Within a subblock all items should be presented in random order with 2 restricions:
1) a filler item can never be followed by another filler item
2) each filler item proceeds each of the irrelevants, target and probe items
My problem is the following, how can i achieve this restricted randomization? Is there a way to differentiate the response formats to different items in a list within a trial function?
I sincerely thank you for any help!
If anything is not clear, I would be more than happy to answer.
I added the script in the attachment.
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Dave
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Group: Administrators
Posts: 13K,
Visits: 104K
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+xHi, In the current experiment there should be 2 blocks each consisting block addressing 4 of the 8 probes. Within a block the 4 probes should be presented within 4 subblocks. Each subblock consists of 1 probe, 1 target, 4 irrelevant items and 6 filler items (2 familiar, 4 unfamiliar). Participants should respond with a left key button or familiar to all targets and familiar filler items. A right key button or unfamiliar is required for all probes, irrelevants and unfamiliar items. The 2 blocks should be randomized as well as the subblocks. Within a subblock all items should be presented in random order with 2 restricions: 1) a filler item can never be followed by another filler item 2) each filler item proceeds each of the irrelevants, target and probe items My problem is the following, how can i achieve this restricted randomization? Is there a way to differentiate the response formats to different items in a list within a trial function? I sincerely thank you for any help! If anything is not clear, I would be more than happy to answer. I added the script in the attachment. > Is there a way to differentiate the response formats to different items in a list within a trial function? I don't understand what that's supposed to mean. Beyond that, if I understand your description correctly, each "subblock" should go like this: It starts with 1 filler-trial, and then 1 probe, 1 target, and 4 irrelevant trials follow, each interspersed with another filler trial. E.g. filler -> irrelevant -> filler -> target -> filler -> irrelevant -> filler -> irrelevant -> filler -> probe -> filler -> irrelevant Is that correct? And, generally speaking, to define a "subblock", you simply specify separate selection pools. Instead of / trials = [1-108 = noreplace(real_PROBE_CC1, real_TARGET_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1)] you do / trials = [1-6= noreplace(real_PROBE_CC1, real_TARGET_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1); 7-12= noreplace(real_PROBE_CC1, real_TARGET_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1); 13-18= noreplace(real_PROBE_CC1, real_TARGET_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1); ...]
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WouterDo
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Group: Forum Members
Posts: 3,
Visits: 12
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+x[quote]+x[quote] Hi, thank you for answering!
Instead of a fixed presentation sequence (filler -> irrelevant -> filler -> target -> filler -> irrelevant -> filler -> irrelevant -> filler -> probe -> filler -> irrelevant), all items should be presented randomly within a subblock. However, When selecting the items randomly the program should know that a filler cannot be followed by another filler (eg., filler -> filler -> probe -> … is not allowed). Moreover, each of the fillers should precede every irrelevant, probe and target item within that randomization (so, filler1-> probe, filler2 -> probe, filler3->probe,…, filler 1-> irrelevant1, filler 2-> irrelevant1,…, filler1->target: all these combined trials should be presented randomly among the other trials).
What I mean by differing response formats is that, if you take those combinations in a trial (eg, filler1 (familiar) -> probe1), filler1 requires a left response while probe1 requires a right response. So, is there a way to define different response keys for different items within a trial function?
And is this kind of randomization possible?
If anything is still unclear, let me know!
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WouterDo
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Group: Forum Members
Posts: 3,
Visits: 12
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+x+xHi, In the current experiment there should be 2 blocks each consisting block addressing 4 of the 8 probes. Within a block the 4 probes should be presented within 4 subblocks. Each subblock consists of 1 probe, 1 target, 4 irrelevant items and 6 filler items (2 familiar, 4 unfamiliar). Participants should respond with a left key button or familiar to all targets and familiar filler items. A right key button or unfamiliar is required for all probes, irrelevants and unfamiliar items. The 2 blocks should be randomized as well as the subblocks. Within a subblock all items should be presented in random order with 2 restricions: 1) a filler item can never be followed by another filler item 2) each filler item proceeds each of the irrelevants, target and probe items My problem is the following, how can i achieve this restricted randomization? Is there a way to differentiate the response formats to different items in a list within a trial function? I sincerely thank you for any help! If anything is not clear, I would be more than happy to answer. I added the script in the attachment. > Is there a way to differentiate the response formats to different items in a list within a trial function? I don't understand what that's supposed to mean. Beyond that, if I understand your description correctly, each "subblock" should go like this: It starts with 1 filler-trial, and then 1 probe, 1 target, and 4 irrelevant trials follow, each interspersed with another filler trial. E.g. filler -> irrelevant -> filler -> target -> filler -> irrelevant -> filler -> irrelevant -> filler -> probe -> filler -> irrelevant Is that correct? And, generally speaking, to define a "subblock", you simply specify separate selection pools. Instead of / trials = [1-108 = noreplace(real_PROBE_CC1, real_TARGET_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1)] you do / trials = [1-6= noreplace(real_PROBE_CC1, real_TARGET_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1); 7-12= noreplace(real_PROBE_CC1, real_TARGET_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1); 13-18= noreplace(real_PROBE_CC1, real_TARGET_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1); ...] Hi, thank you for answering! Instead of a fixed presentation sequence (filler -> irrelevant -> filler -> target -> filler -> irrelevant -> filler -> irrelevant -> filler -> probe -> filler -> irrelevant), all items should be presented randomly within a subblock. However, When selecting the items randomly the program should know that a filler cannot be followed by another filler (eg., filler -> filler -> probe -> … is not allowed). Moreover, each of the fillers should precede every irrelevant, probe and target item within that randomization (so, filler1-> probe, filler2 -> probe, filler3->probe,…, filler 1-> irrelevant1, filler 2-> irrelevant1,…, filler1->target: all these combined trials should be presented randomly among the other trials). What I mean by differing response formats is that, if you take those combinations in a trial (eg, filler1 (familiar) -> probe1), filler1 requires a left response while probe1 requires a right response. So, is there a way to define different response keys for different items within a trial function? And is this kind of randomization possible? If anything is still unclear, let me know!
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Dave
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Group: Administrators
Posts: 13K,
Visits: 104K
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+x+x+xHi, In the current experiment there should be 2 blocks each consisting block addressing 4 of the 8 probes. Within a block the 4 probes should be presented within 4 subblocks. Each subblock consists of 1 probe, 1 target, 4 irrelevant items and 6 filler items (2 familiar, 4 unfamiliar). Participants should respond with a left key button or familiar to all targets and familiar filler items. A right key button or unfamiliar is required for all probes, irrelevants and unfamiliar items. The 2 blocks should be randomized as well as the subblocks. Within a subblock all items should be presented in random order with 2 restricions: 1) a filler item can never be followed by another filler item 2) each filler item proceeds each of the irrelevants, target and probe items My problem is the following, how can i achieve this restricted randomization? Is there a way to differentiate the response formats to different items in a list within a trial function? I sincerely thank you for any help! If anything is not clear, I would be more than happy to answer. I added the script in the attachment. > Is there a way to differentiate the response formats to different items in a list within a trial function? I don't understand what that's supposed to mean. Beyond that, if I understand your description correctly, each "subblock" should go like this: It starts with 1 filler-trial, and then 1 probe, 1 target, and 4 irrelevant trials follow, each interspersed with another filler trial. E.g. filler -> irrelevant -> filler -> target -> filler -> irrelevant -> filler -> irrelevant -> filler -> probe -> filler -> irrelevant Is that correct? And, generally speaking, to define a "subblock", you simply specify separate selection pools. Instead of / trials = [1-108 = noreplace(real_PROBE_CC1, real_TARGET_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1)] you do / trials = [1-6= noreplace(real_PROBE_CC1, real_TARGET_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1); 7-12= noreplace(real_PROBE_CC1, real_TARGET_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1); 13-18= noreplace(real_PROBE_CC1, real_TARGET_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1, real_IRRELEVANT_CC1); ...] Hi, thank you for answering! Instead of a fixed presentation sequence (filler -> irrelevant -> filler -> target -> filler -> irrelevant -> filler -> irrelevant -> filler -> probe -> filler -> irrelevant), all items should be presented randomly within a subblock. However, When selecting the items randomly the program should know that a filler cannot be followed by another filler (eg., filler -> filler -> probe -> … is not allowed). Moreover, each of the fillers should precede every irrelevant, probe and target item within that randomization (so, filler1-> probe, filler2 -> probe, filler3->probe,…, filler 1-> irrelevant1, filler 2-> irrelevant1,…, filler1->target: all these combined trials should be presented randomly among the other trials). What I mean by differing response formats is that, if you take those combinations in a trial (eg, filler1 (familiar) -> probe1), filler1 requires a left response while probe1 requires a right response. So, is there a way to define different response keys for different items within a trial function? And is this kind of randomization possible? If anything is still unclear, let me know! "Instead of a fixed presentation sequence (filler -> irrelevant -> filler -> target -> filler -> irrelevant -> filler -> irrelevant -> filler -> probe -> filler -> irrelevant), all items should be presented randomly within a subblock. However, When selecting the items randomly the program should know that a filler cannot be followed by another filler (eg., filler -> filler -> probe -> … is not allowed). Moreover, each of the fillers should precede every irrelevant, probe and target item within that randomization (so, filler1-> probe, filler2 -> probe, filler3->probe,…, filler 1-> irrelevant1, filler 2-> irrelevant1,…, filler1->target: all these combined trials should be presented randomly among the other trials)." I'm not sure how that is different from what I said? "What I mean by differing response formats is that, if you take those combinations in a trial (eg, filler1 (familiar) -> probe1), filler1 requires a left response while probe1 requires a right response. So, is there a way to define different response keys for different items within a trial function?" I don't understand this either. You would set up at least one separate <trial> element that presents the filler stimuli / items. That trial element can be configured however you need it to be, just like all the other <trial> elements: You define the /validresponse keys, and you define the /correctresponse. If you need to have the correct response change depending on some factor (e.g. the item number), you can achieve that using /iscorrectresponse logic. Plenty examples for that are available in this forum and many if not most library scripts make use of that as well. See e.g. https://www.millisecond.com/forums/Topic15354.aspx#bm15355This is completely independent of any of the other <trial> elements, i.e. it doesn't matter that a different response is the correct one in the probe <trial>.
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