Some developmental psychologists assert that child development has five basic directions:
1- An ever-increasing supply of skilled researchers in the field of child psychology, and this may be due to the high position that child psychology enjoys among scientists and people and to the maturity of science itself, which is represented by training scientists on experiment and using advanced technical means on the one hand and on the maturity of the scientific method itself, on the one hand, Others, the specialists in the study of the child began to train in the field of general psychology, and they acquired advanced scientific skills that enable them to use the most advanced machines, especially those related to the field of statistics.
2- Presenting Skinner to the concepts of procedural conditioning, reinforcement, and behavioral shaping, as his methodology and concepts were leaked to educational projects after their usefulness in teaching children was confirmed as an important means for the success of these projects.
3- Interest in cognitive growth and it is fair here to say that this interest returns to Piace, as psychological periodicals have been filled in the last ten years with research on the principle of preservation and on the principle of moral growth, imagination, perception and memory according to Piyagh’s concepts of these phenomena.
4- Attention to the development of the child’s understanding of grammar and morphology. There is no doubt that the language of the child has been associated with the psychology of the child from the start. However, Chomsky and his speech have paid great attention to the knowledge of grammar and morphology of the child. So as soon as Chomsky proposed his belief that children create their own morphology until psychologists and linguists participated In establishing linguistic psychology, psycholinguistic studies focus its attention now on meanings and the relationship of perceptual development to linguistic development.
5. Finally, Levin researched the concept of social learning. This field has developed and expanded over the last twenty years to establish an integrated system of concepts related to the learning theories proposed by Skinner on one side and the dynamic theories that form the basis of Freudianism on the other side.
This lightning theory indicates the astonishing speed with which child psychology has grown since it was found at the hands of children’s biographers and the writings of popular doctors for more than a century ago.