links of complex interacting systems that affect higher mental functions:
1) Sensory level – includes auditory, visual and motor signals that form the basis of information processing.
2) Cognitive level – includes higher-order processes such as thinking, goal-setting, planning, and problem-solving.
3) Emotional level – where motivation, mood and emotions play a role in regulating behavior and directing attention.
4) Social level – includes interaction with family, peers and teachers, which improves the learning process and forms higher mental functions.