Dear all,
We have a question concerning implicit baseline. In an experiment using a block design, we have 3 different conditions within 3 different sessions (3 different instructions, ie inst1cond1, inst1cond2, inst1cond3; inst2cond1, inst2cond2, inst2cond3; inst3cond1, inst3cond2, inst3cond3), all modelled with no rest or fixation cross, all in the same order across session.
If at the 1st level analysis, I want for example to have a look at the effect of cond1 (say whatever the instruction) and create the vector [1 0 0], what exactly will be my implicit baseline here? Will it be an average of anything occuring during the other conditions (ie an average of what happens in the 0 0 of my [1 0 0] vector)?
Is there anything wrong it that approach?
Thanks in advance for your thoughts.
Best,
Yann
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