Practice Session
On this page you will see seven pairs of images.
Your task is to compare the left image with the right image for each pair,
judging on a scale from 1 to 9 how similar they appear to be.
In the first pair
the left image and the right image are very different. Please indicate
that they are most different by checking the diamond labelled "9."
In the second pair
the left image and the right image are very similar. Please indicate
that they are least different by checking the diamond labelled "1."
When you have left no pairs unchecked, then please submit your responses
for this practice session by clicking on the "submit" button.
NOTE:
In subsequent experimental sessions, the differences between images
within the pairs may not be as large as in this example.
Also, note that you can assign the same grade to more
than one pair of images.