A Comparison of Native and Non-Native English-Speaking Teachers Beliefs about Teaching English as a Second Language to Adult ELLs, by Rosemaria Maum (2003).

I located this dissertation in the Linguistic & Language Behavior Abstracts (FAU database). It should help me answer one of my teacher questions: What is the research on native-language and non-native language English language teachers?
Questions asked included a.) the role of the teacher's sociocultural and linguisitc background; and b.) the importance of including cross-cultural issues in ESL instruction. The NLS (number of languages spoken) was significantly correlated to the teachers' beliefs about teaching ESL to adult ELLs.

I could not find this dissertation in ProQuest for some reason.