Ramdomize the blocks while selecting a specific selection for a block in real time

KatrinH Heimann katrinheimann at gmail.com
Sun Aug 17 06:52:59 UTC 2014


Hey, well I guess what you could do is, referring in an inline before and
after the block to the attribute subjectnumber and depending on this let
eprime jump to the right block using a "goto" command and a label

so assuming you would have two blocks only and subjects 1 would have to do
the first block first, subject 2 the second:
you would need to put an inline object before the blocks saying something
like

if getattribute "subjectnumber" = 2 (I am not sure though anymore about how
the getattribute command is implemented precisely, look it up googling)
goto label1 (which you should put before block 2)

and then after block 2:

if getattribute "subjectnumber" = 2
goto label2 (which you should put before block 1 after the first inline)

and then after block 1:

if getattribute "subjectnumber" = 2 (I am not sure about how the
getattribute command is implemented anymore, look it up googling)
goto label2 (which you should put before block 1 after the first inline)

if getattribute "subjectnumber" = 2 (I am not sure about how the
getattribute command is implemented anymore, look it up googling)
goto label3 (which you should put at the end of the experiment)

but there are a lot of inlines involved like this....
probably there is an easier way, too....

k





2014-08-17 1:52 GMT+02:00 Zh Wu <wzhmelly at gmail.com>:

> For simplicity, I just designed four different scripts, but I am still
> wondering whether this is doable in Eprime:)
>
> On Wednesday, August 13, 2014 7:35:34 PM UTC-4, Zh Wu wrote:
>>
>> I am designing an experiment with two blocks, BlockA and BlockB.
>>
>> I want 1/4 of participants to do BlockA randomly and then BlockB
>> sequentially, 1/4 of participants to do BlockA sequentially and then BlockB
>> randomly, 1/4 of participants to do BlockB randomly and then BlockA
>> sequentially, and 1/4 of participants to do BlockB sequentially and then
>> BlockA randomly.
>>
>> I know how to select the blocks randomly (i.e., half participants do
>> BlockA first and the other half BlockB first), but for the specific list, I
>> don't know how to change the selection for a specific participant.
>>
>> Any help would be greatly appreciated!
>>
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