Correction to: Journal of Computational Social Sciencehttps://doi.org/10.1007/s42001-020-00080-x

In the Original publication of the article, two errors were found. Figure 2 and Fig. 3 have been exchanged and Table 4 has been published inadvertently as a duplicate of Table 3. The corrected versions are given below.

Fig. 2
figure 2

Observed proportion of three bigrams with largest F-value in an alternative group

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Fig. 3
figure 3

Observed proportions of three bigrams with largest F-value in the progressive group

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Table 4 Ten bigrams with largest Chow test (F) statistic for progressive group
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