Over 1981-88, I was an Assistant Professor of Economics, American University, Washington, DC. I taught mainly graduate courses. My fields were Econometrics and Development Economics.
In 2007, I returned to this University on a part-time basis. One the courses I taught was Introductory Economics for graduate students in the School of International Service. For most of them, this was a required course because they had not taken any economics course as undergraduates (or had completely forgotten what they had studied then.) And, most of them did not take any other course in economics.
I had asked to teach this course. Over the years, I had come to feel that introductory economics textbooks were not suitable for students who did not want to be economists. Therefore, I had said that I would write my own lectures from scratch, and not use any textbook.