ABSTRACT
In the first pilot study they talked with clerical and production workers as well as professional and managerial people. They discovered that the professional and managerial groups were more verbal, showed a quicker grasp of the technique, and gave more and better delineated sequences of events than the clerical and production groups. The second pilot study was restricted to managerial and professional people. It was apparent in the results of this second pilot that engineers were able to give exceptionally vivid accounts of their work experiences. There were two sampling problems to be solved. One was the representativeness of the group of respondents in the universe of engineers and accountants. The other was the representativeness of the sequences of events reported by these respondents in their lives. The criteria for choice of engineers were much simpler than those for accountants.
