By esia_1 - 4/14/2016
Hi,
I have an experiment where participants should rate pictures, so I made surveypages with one picture (as an image element) on each surveypages and some items to rate on it.
Until now I was testing it with 10 pictures (= 10 surveypages), but I need 200. Now Inquisit needs a really long time to load the experiment and every page even when I only have 30 pictures in it. One picture has around 1MB. I am presenting the picture in Inquisit smaller than it really is (with less pixel than it actually has, so I present it not in the original size).
Is 1MB per Picture to much for presenting so many pictures in one experiment? Can I just reduze the size (data volume) of each picture and then it will work? Or is there a "limit" of how many pictures or surveypages Inquisit can present in one experiment without problems?
Thank you for your help!
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By Dave - 4/14/2016
No, there is no strict limit. Inquisit will allow as much as your system's resources (RAM, etc.) permit. Note that re-scaling high-resolution images ("I am presenting the picture in Inquisit smaller than it really is (with less pixel than it actually has, so I present it not in the original size).") does increase the amount of processing necessary. Decreasing the images' resolution will reduce that cost.
Reducing file sizes etc. is a good idea (1MB per image is almost certainly unnecessarily large) -- especially if you are planning to administer the study via the web.
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