Figure 2
The line graph displays the variability in attributions across three parts of documents from 2002 to 2012. The graph includes three lines representing the first, middle, and last parts of the documents. The first part consistently shows the highest percentage of attributions, the middle part shows intermediate levels, and the last part shows the lowest. The graph also includes period mean lines for each part, indicating the average attribution percentages over the observed periods. The first part's attributions start high and gradually decline, while the middle part fluctuates around a steady mean. The last part's attributions remain relatively low throughout the period. The graph illustrates that the location of attributions in the sections of the documents does not significantly change between high-performance and low-performance periods.Variability in attributions: first, middle and last part of the documents (2002–2012)