What is child psychology?

What is child psychology? :give rose: 

Child psychology may be simply explained as child study or the study of the end. It is also the branch of psychology that is concerned with the child growth, development, behaviour and experiences
Child psychology can be defined as the study or acquisition of the knowledge about the child in relation to his physical, mental, social, emotional and moral growth and how they influence the quantity and quality of the child’s learning and his personality generally.

Studying child’s behaviour or identify the factors that influences his behaviour or personality, psychologist have found that sequences and linkages that are relevant in understanding and predicting changes in behaviour or patterns of development appear to be universally the same.