Millisecond Forums

In essence, you enter the items and/or item numbers into the script in the predetermined order and then you simply set the respective <text> and/or <list> elements responsible for stimulus selection to sequential selection, i.e. /select = sequence.

Thank you for the feed back, but now I am receiving an error message ("The stimulustimes attribute specifies the stimulus presentation sequence for trials in terms of time in milliseconds") when I attempt to run the test trial.

<text ready>
/ items = ("*")
</text>


<trial ldtcategory>
/ stimulustimes = [0 = ready, 300 = list.ITEMS]
/ trialduration = 8400
/ validresponse = ("E", "I")
/beginresponsetime = 0
</trial>

I tried as a 300=ITEMS, 300=text.ITEMS (which went through without an error message for awhile but only the first item in the list appeared)

I think it is safe to say I am new with Inquisit.

Sincerely,
Lawson

It is impossible for me to tell you the reason for the error based on such a limited code snippet. At a minimum, you ought to include the code for the referenced elements, i.e. <list ITEMS> and/or <text ITEMS>. Given that, as you say, you are fairly new to Inquisit, giving the tutorials included in the documentation a look might be a good idea. That will definitely help you to better understand and modify any existing code.

That said, let's dissect things a little bit. In the original LDT script, <trial ldtcategory> displays a <text> stimulus called "category":

<trial ldtcategory>
/ stimulustimes = [0=ready; 700=category; 950=blank]
/ validresponse = ("E", "I")
/ correctresponse = ("I")
/beginresponsetime = 700
/ ontrialend = [
    list.catwords.insertitem(trial.ldtcategory.correct, 1);
    list.overallaccuracy.insertitem(trial.ldtcategory.correct, 1);
    if (trial.ldtcategory.correct) {
        list.catwords_correctRT.insertitem(trial.ldtcategory.latency, 1);
        list.overallRT.insertitem(trial.ldtcategory.latency, 1);
    };
]
</trial>

This is the <text category> element

<text category>
/ items = category
</text>

and it use the following items in <item category>:

<item category>
/ 1 = "category1"
/ 2 = "category2"
/ 3 = "category3"
/ 4 = "category4"
/ 5 = "category5"
/ 6 = "category6"
/ 7 = "category7"
/ 8 = "category8"
/ 9 = "category9"
/ 10 = "category10"
/ 11 = "category11"
/ 12 = "category12"
/ 13 = "category13"
</item>

Now, if you want those items to be sampled in a fixed order instead of randomly, you simply set <text category> to sequential selection:

<text category>
/ items = category
/ select = sequence
</text>

The item "category1" will then be displayed in the 1st instance of <trial ldtcategory>. The item "category2" will be displayed in the 2nd instance of <trial ldtcategory> and so forth.

Little bit of an embarrassment but I realized what the second issue was about 30 minutes ago. I was using the LDT template and I accidentally deleted something and saved it without realizing.

Sorry about that. I really do feel bad about that. Thank you for the help.

Sincerely,
Lawson

No reason to feel embarrassed at all! And please don't hesitate to post here if you encounter other problems or have further questions, that's what this place is for after all.