![]() ![]() ![]() In other words, is there is a way to repeat a stimuli with a different response type within the same routine, while ensuring a balanced random sample without replacement while every scenario is seen once per response type? So I guess my main question is: Is this best done in a single routine? However, I’ve seen that you guys discourage looping several routines like this and prefer that one routine be looped over and over again with coding elements stipulating how each set of 15 trials will behave (that is, which response type will be called, which time pressure condition will be called, which instructions will be called, etc. Then enclose those four blocks within a single loop, and randomize the blocks. I’d put a loop around those two routines, which would make a block, of which there would be 4 in the end. Forced choice - time Pressure, for example, would consist of the instructions routine for Forced Choice -Time Pressure, then a looped routine for 15 forced choices. I thought about making 4 actual blocks in the builder view, each comprised of the instructions and the a loop set to repeat 15 times. I also need instructions to go with each block: if Block 2 gets called, the subject should see instructions regarding forced choices under time pressure, and so on. Said another way, blocks 1&2 share the same stimulus pool as blocks 3&4, and the stimuli seen in say, block 1, need to be different from block 2 (balanced random sample without replacement), while block 3 needs to be different from block 4, but after completing all four blocks, subjects will have seen all stimuli twice (once in block 1 or 2, once in block 3 or 4). Importantly, subjects rate each scenario twice - once with forced choice, once with continuous ratings. Same as 2, but subject makes continuous rating under time pressure.īlock order should be random (1234, or 3142, etc). Same as 1, but subject makes continuous ratingīlock 4. balanced random sample without replacement), makes forced choice under time pressureīlock 3. Subject sees remaining 15 stimuli, 5 of each type (i.e. balanced random sample without replacement), makes forced choice about each of themīlock 2. Subject sees 15 scenarios in random order, 5 of each type (i.e. In the experiment, subjects will proceed through 4 blocks (conceptually speaking):īlock 1. I have a conditions file with two parameters: ScenarioType (which indicates which type the scenario in that row is) and Scenario (which is the wording of the scenario). Stimuli are 30 written scenarios, with 3 types (so 10 of each type of scenario). I’ve been lurking for awhile but came across a problem that I haven’t been able to resolve. ![]()
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