With a view to improving the quality of life of persons living with disabilities without direct intervention but in the context of action at the level of their personal development, and with the institutional support of the University of the Balearic Islands and funding from "SA Nostra" Caixa de Balears, we decided to develop, implement and evaluate a training programme aimed to generate a change in attitudes towards people with mental disabilities. The programme is targeted to professionals who have an impact on personal development. On the basis of the experience of one of the businessmen in the group of professionals that was set up for the purpose of our experiment, we seek to highlight the possibility of inducing change, from an initial attitude focused on the productivity of the enterprise to one based on the principles of normalisation and equality of opportunities; the latter is more conducive to mentally disabled people achieving social and occupational integration. (Contains 1 table.)