Technical Communicators--Why They Study 
The authors, both teachers at Concordia University, report on a survey conducted by their Continuing Education Department that suggests several reasons why many technical communicators desire more education. Waterhouse and Sklar also describe how their department is using the survey to tailor its curriculum to the needs of technical communicators.
Waterhouse, Ann and Adrianne Sklar. Intercom (2000). Articles>Education>Continuing