By sunm - 12/27/2013
Hello,
I'm trying to create a custom likert-style question (Self-assessment Manikin) where I can record 1-9 after a picture stimulus is clicked. I have the trial and pictures lined up, but I can't figure out how to record the response as an integer upon clicking an appropriate picture.
Bonus: Would it be possible to change the picture (e.g. grey background instead of white) upon mouseover, to indicate to the respondent what option s/he is selecting?
My code so far:
<trial SAMA1> / stimulustimes = [0=SAMAinstruct, SAMA1, SAMA2, SAMA3, SAMA4, SAMA5, SAMA6, SAMA7, SAMA8, SAMA9] / validresponse = (SAMA1, SAMA2, SAMA3, SAMA4, SAMA5, SAMA6, SAMA7, SAMA8, SAMA9) / inputdevice = mouse </trial>
<text SAMAinstruct> / items = ("Rate your Arousal") / size = (500px, 200px) / fontstyle = ("Verdana", 14pt) / position = (50%,40%) </text> <picture SAMA1> /items = ("SAM-A-1.png") /position = (10%,50%) </picture> <picture SAMA2> /items = ("SAM-A-2.png") /position = (20%,50%) </picture> <picture SAMA3> /items = ("SAM-A-3.png") /position = (30%,50%) </picture> <picture SAMA4> /items = ("SAM-A-4.png") /position = (40%,50%) </picture> <picture SAMA5> /items = ("SAM-A-5.png") /position = (50%,50%) </picture> <picture SAMA6> /items = ("SAM-A-6.png") /position = (60%,50%) </picture> <picture SAMA7> /items = ("SAM-A-7.png") /position = (70%,50%) </picture> <picture SAMA8> /items = ("SAM-A-8.png") /position = (80%,50%) </picture> <picture SAMA9> /items = ("SAM-A-9.png") /position = (90%,50%) |
By Dave - 12/27/2013
Set up an <expression> that strips the letters from the <trial>'s response property
<expressions>
/ response_as_integer = replaceall(trial.sama1.response, "SAMA", "")
</expressions>
and log that expression to the data file
<data>
/ columns = [..., expressions.response_as_integer, ...]
</data>
You could achieve the same thing via a bit of conditional logic in /ontrialend, storing the result in a <values> entry and logging that value instead.
Finally, you could simply name your picture elements differently and not need any of the above (i.e., <picture 1>, <picture 2> etc.). You cannot use '0' as a name though, as 0 signifies 'noresponse'.
|
|