In the quantitative study, the information obtained will be checked, coded, digitized, and analysed using the SPSSstatistics program package. In the qualitative study, the data will be processed according to the techniques of contentanalysis (Bardin, 1986). This requires the identification of relevant information units in each source of information and their subsequent classification, whenever possible, into either pre-determined categories, or into newly created categories or subcategories. Both the categorization of the information units and the elaboration of the proposals of synthesis will be validated by means of triangulation processes. The initial category system (which may be reformulated during the development of the work) is as follows: