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Data from Yap et al. (2008), illustrating the frequency effect as a function of the vocabulary size
| University | Age | Years of Education | Vocabulary Age | RTHF | RTLF | Effect |
|---|---|---|---|---|---|---|
| Washington University | 20.9 | 13.8 | 18.7 | 612 | 678 | 66 |
| University of Waterloo | 20.9 | NA | 17.7 | 658 | 753 | 95 |
| University at Albany (SUNY) | 19.4 | 12.2 | 16.9 | 732 | 844 | 112 |
