Three measures of reader engagement are available on the NRS:
- Frequency of reading
- Source of copy
- Time spent reading
Frequency of reading describes the reader’s relationship with the publication. It is also used to generate the readership probabilities for schedule analysis models.
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Source of copy is an indicator of the reader’s relationship with a publication. Detailed information is available as to who obtained the copy and how it was obtained. NRS also provides an overall classification of primary and secondary readership based on source of copy.
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Time spent reading is a measure of reading intensity which can be used to compare publications.
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