J. Scott Armstrong (Ph.D. from MIT, 1968) is Professor of Marketing at the Wharton School, University of Pennsylvania, where he has been since 1968. In addition to teaching in Thailand, he has taught in Switzerland, Sweden, New Zealand, Australia, South Africa, Argentina, Japan, and other countries. He was a founder and editor of the Journal of Forecasting, the International Journal of Forecasting, and the International Symposium on Forecasting. A study in 1989 ranked him among the top 15 marketing professors in the U.S. Another study named him as the second most prolific Wharton School faculty member during the 1988-1993 period.

In 1996, he was selected as one of the first six "Honorary Fellows" by the International Institute of Forecasters. Along with Philip Kotler and Gerald Zaltman, he was given the Distinguished Scholar Award for 2000 by the Society for Marketing Advances. His most recent book, Principles of Forecasting, published in 2001, has received excellent reviews. He is the founder of the forecastingprinciples.com website.