The link between the stimuli to responses by learning the fundamentals that caused a link between stimuli to responses that usually comes out in multiple variations, with a try to be trial and error until you find the best model and optimization.
The link between stimulus and response. The basis for Learning of the link between the stimulus and the response that usually comes in the form of different forms by trying to be false. Until you find the best and most appropriate format.
The links between stimuli and responses by basic principles. Learning due to the links between stimuli and responses usually come out in various forms, many forms, by trying to be trial and error.