The question asked here does not concern long trainings extending over years, as is the case in music (see Chapter 21). It is neither concerned with training aiming at being able to guess what time it is correctly or to wake up at a precise moment without an alarm. We rather wonder to what extent we can improve capabilities to solve the temporal requirements in simple tasks, and to what extent this learning, if any, could be transferred to another temporal task. The following lines will illustrate temporal tasks, classical and quite simple, used in experimental psychology and which have been the object of training.