This study examines the assumption that training in professional ethics is a predictor of the meta-moral cognitive ability of engineering students. The main purpose of the study was to check the difference in the meta-moral cognitive abilities between those students who studied a course on professional ethics, as part of the engineering curriculum, and those who did not undertake such a course. Using the survey method, the author conducted a pilot study amongst 243 engineering undergraduates. The meta-moral cognitive awareness inventory developed on the basis of the meta-cognitive awareness inventory prepared by Schraw Gregory and Dennison Rayne Sperling was used to measure the meta-moral cognitive level of the respondents. The results show that there was a substantial difference in the meta-moral cognitive abilities between those students who studied professional ethics, and those who did not. The univariate analysis of variance of the collected data reveals a significant variance.