Introduction: Four Carrots and a Stick
http://wac.colostate.edu/llad/v3n2/dowell.pdf

Dowell, Earl H.
LLAD
1999

Abstract:

We must understand that if we graduate engineering students who have a full complement of communication skills, we will better prepare them to be more effective professionals as well as highly valued citizens. Clear communcation and clear thinking are mutually reinforcing. Together they are a powerful combination that will serve well the individual, our nation and world in the exciting years ahead.