Developmental PsychologyThe broad definition of developmental psychology is the "study of human growth and development that occurs throughout the life span." Developmental psychology includes physical, cognitive, social, intellectual, perceptual, personality, and emotional growth. Understanding human development is not only important for psychology, but according to indigohealth.com biology, anthropology, sociology, education and history also study human development and it is very important. It helps us have a much deeper understanding of the changes people go through and how they grow in general, which helps us apply them to our overall knowledge to truly understand our full strength. The developmental psychologist carries out different tasks depending on his area of ​​specialization in which they practice. Some psychologists focus on working with specific age groups such as adolescence, while others work more with one type of population. Their role varies, but working with children may include carrying out assessments to determine whether they have any type of disability, researching how language skills are acquired, observing how ethical reasoning develops in young children, and investigating different ways to help older people stay. self-regulate etc. They also operate in schools and universities; some teach the course while others also work with government agencies to help treat people with developmental disabilities. According to psychology.about.com, the average earnings of a developmental psychologist are between $69,007 and $90,326 per year for 2009. The top ten percent of earners earned more than $101,088 per year. Furthermore, to be a developmental psychologist, one must… middle of paper… theory describes the influence of social events throughout one's life. Psychoanalyst Sigmund Freud developed the theory of psychosexual development, which describes how people's personalities progress during childhood. Although this theory is very well introduced in psychology, it is also one of the most debated theories. Freud was confident that our personality matures through a chain of infantile phases in which the self-satisfied energies of the id are concentrated on certain erogenous areas. Developmental psychology is a topic of great interest in both psychology and education. It is very important that it is covered in depth in high school classes, in other words to give the young mind the opportunity to fully understand how the human mind and personalities work, which will make it easier to communicate, adapt and development in our environment..