Are reading texts becoming harder or simpler?

Robert J. Stevens, have done a pretty serious study of this question, based on computer analysis of texts, and here is their key conclusion:

From about 1930 through 1960 or 1970, the cognitive demands of reading curricula changed little…

In the period of 1970 through 2000 we observed a fairly consistent increase in the difficulty of reading text and comprehension tasks, particularly at third grade.

For sixth graders, however, reading texts were somewhat more complex in the 1910-1930 period.

I also found this comparison interesting:

In the 1920s, 45% of all questions asked were explicit detail questions, whereas by 1990 and 2000 curricula, that had diminished to only 8% of the questions asked.

Alas I can no longer remember who deserves thanks for this pointer.  Here is an earlier Alex post about whether TV shows are becoming more complicated.


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