Rewarding during training

The rewarding process in training has 2 distinct stages.
Starting with continuous reinforcement where the dog learns that for every positive response he receives some kind of reward, we move on to the partial or intermittent reinforcement.
In this second stage of the partial reinforcement, we change the delivery time of the reward depending on the response of the trainee.
In the following video we see Lea in the middle of the basic training responding perfectly to our routine that contains the basic commands of Come, Sit, Down and Heel, in an environment with low to medium stimuli.
By the end of the program we will adopt intermittent reinforcement whose goal is to maintain the motivation to repeat the behaviors we have learned, and we will gradually increase the stimuli even more.