Notes

1.
This section is based on the work of Werlich, 1976. Category names in parentheses are alternative ways of labeling the class.
2.
Mosenthal and Kirsch wrote a monthly column on Understanding Documents, which appeared in the Journal of Reading between 1989 and 1991.
3.
While most of the tasks in IALS received common RP80 values, a few tasks were assigned values unique to a particular country when warranted by the data. Since the value assigned to each variable used in the regression analyses was based on the evaluation of each task in English, it was decided to use the RP80 values for the US as well.
4.
The data used in the regression of prose literacy items are provided in Appendix B.
5.
The data used in the regression of document literacy items are provided in Appendix B.
6.
The data used in the regression of document literacy items are provided in Appendix B.