Electrical Engineer (BS from Penn State, retired) and linguist (MA from Univ of Pittsburgh. Spanish, Italian, Portuguese, Polish and adding Esperanto).

Master's degree long paper published in the refereed journal "Language Learning:" https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1467-1770.1996.tb01354.x

Taught ESL for 6 years and U of Pitt.