He also published numerous research papers and general-public articles.
Cossette was the chairperson of the Programme de Communication Graphique at Laval University in 1975-78 and once more in 1990-97.
In 1996, he launched ComViz-Communication visuelle, an online course, probably the first French language university level course that may be completed entirely through the Internet.
He was the Pedagogical Director of a series of 26 TV programs on Advertising in Quebec.