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Seeing the similarity report

The level of similarity shown on left relates to the number of content vocabulary items the two texts share.

Notice the jump from 9% or below to 18% and above between Barry, Bill and Bob. There is normally a distinct step between independently written essays and those showing signs of collusion.

Individual pairings of sentences can be selected on the right.

Fully cross-referenced sentences are shown in bottom two windows.
[P8 S1] The 1st sentence of Paragraph 8 in Barry on the left has been modified from
{P11 S2}
The 2nd sentence of Paragraph 11 in Bob on the right.

Words in red are identical
Words in black show the nature of the changes made.

The sentence selected has been chosen to show how CopyCatch can find sentences which are not strongly linked by shared stretches of words. This example would need to be considered in the light of other material, to assess whether there was a dependency.