Millisecond Forums

Depends on what you want the code to do -- which is not obvious from your script. For the record:

/ ontrialbegin = [values.item=counter.items.selectedvalue; ...]

will sample a value from the counter and store it in values.item. values.item, though, is never actually used for anything in the script. The respective counter is set to '/ selectionrate = always' for reasons unclear to me. You'd need that setting if you wanted to pull several *different* values from said counter in a single trial. The various <picture> elements reference the counter as a dependency via '/select = current(items)', the intention of which also remains unclear to me.

Regards,

~Dave

First of all, Dave, you are awesome. Thanks for your help.

My goals:

1. Randomly select a question for each trial (currently, via the item counter.  I just looked at the help, and I think I should be using selectionrate=trial instead of always)


2. Call all of the relevant stimuli related to this question (4 pictures, 2 sounds, currently via the current(items) mechanism), plus the correct response (currently via the second counter).  This is the part that I am most unclear about.  After Inquisit randomly selects a question from the item counter, how do I call all of the relevant stimuli from the picture/sound elements?  What I've done works, but you seem to be indicating that my strategy is misguided.


3. If the question is one of the first X questions, use more audio instructions to help the children understand the task.  After that, eliminate those additional instructions.

Best regards, 

Jeff

Yes. Note that '/selectionrate = trial' is what a counter defaults to.

Yes, what you've done works (at least looks like it), but it does so by accident rather than by good design (no offense). Several more straightforward / clearer strategies:

- Simply have all of the various stimulus elements (<picture>, <sound>, etc.) reference the counter directly in their /select attributes (/select = items). The counter will supply one value (i.e., here: item index #) per trial (see above), all elements will thus retrieve the correct item set.

- Alternatively keep your /ontrialbegin statement and use values.item in /select (/select = values.item)

Your different trial elements take care of that. The practice trials display those sounds, etc., the test trials don't.

Regards,

~Dave

No offense taken.  "I'd rather be lucky than good".  [:D]