Apart from author identity, there are several other factors that can explain the number of hapax legomena in a work:Steven J. DeRose. "A Statistical Analysis of Certain Linguistic Arguments Concerning the Authorship of the Pastoral Epistles." Honors thesis, Brown University, 1982; Terry L. Wilder. "A Brief Defense of the Pastoral Epistles' Authenticity". Midwestern Journal of Theology 2.1 (Fall 2003), 38–4. (on-line) text length: this directly affects the expected number and percentage of hapax legomena; the brevity of the Pastoral Epistles also makes any statistical analysis problematic. text topic: if the author writes on different subjects, of course many subject-specific words will occur only in limited contexts. text audience: if the author is writing to a peer rather than a student, or their spouse rather than their employer, again quite different vocabulary will appear. time: over the course of years, both the language and an author's knowledge and use of language will change.
Apart from author identity, there are several other factors that can explain the number of hapax legomena in a work:Steven J. DeRose. "A Statistical Analysis of Certain Linguistic Arguments Concerning the Authorship of the Pastoral Epistles." Honors thesis, Brown University, 1982; Terry L. Wilder. "A Brief Defense of the Pastoral Epistles' Authenticity". Midwestern Journal of Theology 2.1 (Fall 2003), 38–4. (on-line) text length: this directly affects the expected number and percentage of hapax legomena; the brevity of the Pastoral Epistles also makes any statistical analysis problematic. text topic: if the author writes on different subjects, of course many subject-specific words will occur only in limited contexts. text audience: if the author is writing to a peer rather than a student, or their spouse rather than their employer, again quite different vocabulary will appear. time: over the course of years, both the language and an author's knowledge and use of language will change.