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How to know which stimulus was presented to participants

linatet — Mon, 08 Aug 2022 20:14:38 GMT

Good afternoon,

I ran a study with the following code. The goal was to present 4 different images to participants randomly.

<image wm1>
/items = ("242.jpg")
/position = (55%, 10%)
/imagesize = (25%, 25%)
</image>

<image wm2>
/items = ("009.jpg")
/position = (55%, 10%)
/imagesize = (25%, 25%)
</image>

<image bm1>
/items = ("227.jpg")
/position = (55%, 10%)
/imagesize = (25%, 25%)
</image>

<image bm2>
/items = ("019.jpg")
/position = (55%, 10%)
/imagesize = (25%, 25%)
</image>

<surveypage story>
/ fontstyle = ("Arial", 2.5%, false, false, false, false, 5, 1)
/questions = [1 = story; 2=noreplace(wm1, wm2, bm1, bm2)]
/showpagenumbers = false
/showquestionnumbers = false
/ showbackbutton = false
</surveypage>

From the collected data, how do I know which of the images participants saw on the survey page? Thank yo

RE: How to know which stimulus was presented to participants

Dave — Mon, 08 Aug 2022 20:14:38 GMT

+x[quote]

[b]linatet - 8/8/2022[/b]
Is there a line of code I can add to record this information, or do I need to do a separate <expt> for each of the stimulus?
[/quote]

If the type of stimulus -- wm1, wm2, bm1, or bm2 -- paired with the story is supposed to be a between-subjects factor, then yes, you should set up 4 <epxt>s.

RE: How to know which stimulus was presented to participants

linatet — Mon, 08 Aug 2022 20:07:12 GMT

Is there a line of code I can add to record this information, or do I need to do a separate <expt> for each of the stimulus?

RE: How to know which stimulus was presented to participants

Dave — Mon, 08 Aug 2022 19:20:57 GMT

+x[quote]

[b]linatet - 8/8/2022[/b]
Good afternoon,

I ran a study with the following code. The goal was to present 4 different images to participants randomly.

<image wm1>
/items = ("242.jpg")
/position = (55%, 10%)
/imagesize = (25%, 25%)
</image>

<image wm2>
/items = ("009.jpg")
/position = (55%, 10%)
/imagesize = (25%, 25%)
</image>

<image bm1>
/items = ("227.jpg")
/position = (55%, 10%)
/imagesize = (25%, 25%)
</image>

<image bm2>
/items = ("019.jpg")
/position = (55%, 10%)
/imagesize = (25%, 25%)
</image>

<surveypage story>
/ fontstyle = ("Arial", 2.5%, false, false, false, false, 5, 1)
/questions = [1 = story; 2=noreplace(wm1, wm2, bm1, bm2)]
/showpagenumbers = false
/showquestionnumbers = false
/ showbackbutton = false
</surveypage>

From the collected data, how do I know which of the images participants saw on the survey page? Thank yo
[/quote]

> From the collected data, how do I know which of the images participants saw on the survey page?

If that's the way you set this up, then that information is not logged. You cannot tell from the data you have.