No es mi tema, pero creo que las categorías socio-económicas son internacionales, la ABC1 por lo menos, lo es.
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Of course, this question itself does not permit us to distinguish between Rogers' "Innovators" and "Early Adopters". But, as Rogers pointed out himself, innovativeness is a continuous concept and the categorization into mutually exclusive discrete groups is just a conceptual device, like the categorization of socio-economic status into groups such as A, B, C1, C2, C3 and D. So the survey question here is used to identify the innovators/early adopters in a loose sense. We also note that the term 'technology' is used in a very broad sense here and may not be applicable to any specific instance of a technology, as a person competent in information technology may be untrained in biotechnology, a person who develops computer software may know nothing about network routers, and so on.