Obviously the training process is the responsibility of each instructor / teacher.
In the early stages of education the attacks as the defense techniques are predefined and agreed. The attacker (uke) will make the attack with a specific kinesiology and the defender (nage) will also make the defense with a specific kinesiology. The movements are agreed and therefore the two roles work together to carry them out.
During the training the trainees alternate roles of attacker and defender. Within the context of practice everyone do the techniques regardless of the gender, body type, age, life experience and experience in martial art. The advanced trainee adjusts his technique, so that he could help the beginner, the beginner uses the experience and the indications of the advanced student.
At first the movements of the beginner are crude without harmony and sometimes meaningless. As the level rises,for the beginner, the kinesiology sense becomes more fluid, more accurate and more dynamic. With repetition and smooth introductions of the advanced techniques in Aikido, the trainee experiences it as something natural, as an extension of himself. At the advanced level the techniques of Aikido are completed within a few seconds and the result is being predetermineds upon the intention of the attack.
Gradually,the trainee understands and realizes the exchange of information that take place between the two roles at the physical level. He recognizes the strength derived by his body, when body and mind remain relaxed yet focused at the point of action.
Later he will use this personal experience in all forms of communication (sharing information) in his family, work, school, etc. With the same philosophy of nonviolence both parties benefit from that (win to win approach).
Finally,long term, adjusts Aikido to his own personality.