In this work we will relate the processes of local inferences of induction, analogy and abduction to the area the technological prospective. The interest to focus the connection with prospective is bassed on the advance on the last decades on this utilization on the studies of science, technology and society, an interdisciplinary approach that problems relative to the impact of such processes as the formulation of sicentific technological policies in the frame of national systems of innovation. The work divides in two parts, in the first one there traat each other the processes of logical inferences of induction and abduction. There appears the structure of such processes inferential, and they propose a series of paragraphs where are commented aspects that we have considered to be relevant: the relation between the observed and the supposed thing, the investment causes effect, the connection with the discovery, the nature of the hypotheses, the heuristic importance, the sense of temporality and pragmatism. In the second part of the work, relations are established between the analogical inferences and abductives with technological prospective depending on the criteria mentioned previously
