The subjects in the study were instructed to read sentences (on a computer screen) for comprehension. Sometimes the sentences were presented normally; other times, the sentences were presented such that a word was masked with "X"s as soon as the subjects moved their eyes away from it, making it impossible for them to get more information from the word were they to return to it.

The results showed that, during normal reading, comprehension levels were about the same whether the students did or did not make a regression. These results suggest that we only make regressions when we fail to understand something, and we can fill in the gap by going back to look again.

But, when the researchers compared data from the normal sentences and the masked sentences, they found that the students showed impaired comprehension for the masked sentences, presumably because they weren't able to re-read when it would have been helpful. "When readers cannot backtrack and get more information from words and phrases, their comprehension of the text is impaired," explains Schotter.

Interestingly, the students showed similar impairments in comprehension for masked sentences that were straightforward and also for more difficult, ambiguous sentences, suggesting that regressions are critical for reading comprehension across the board.

The study has clear relevance to new apps that minimize eye movements and limit the amount of control readers have over the sequence of reading. But, says Schotter, "given how integral reading is to our everyday lives, the findings also have broad relevance to our understanding of how we read any piece of text."

DUFFERIN RESEARCH REPORT: READING HABITS AMONG CANADIAN INTERNET USERS 

Here is a sample of the findings, free to use in whole or part :

 - Dufferin Research : Dufferin Research Canadian Reading Report