Abstract
From Darwin to Skinner: Learning pychology and operant conditioning historical genesis. In order to understand the genesis of learning psychology in general and operant psychology in particular, it is necessary to soar to the historical conditions that made possible its appearance, among which it is the context that provides the darwinist evolutionary theory. Within this theory will come up the necessity of explaining the inteligent activity of organisms. In order to do that the comparative pychology essayed an innatist logic, which later became canceled because of the treatment of the individual activity through the management of the environmental conditions that let its learning. The summit of this learning pychology historical development is Skinner's operant psychology, which, far from lacking problems, analogicaly reproduces the darwinist evolutionary theory estructure.