The meninges are three layers of protective tissue called the dura mater, arachnoid mater, and pia mater that surround the neuraxis. The meninges of the brain and spinal cord are continuous, being linked through the magnum foramen. Dura Mater.
Developmental psychology, also referred to as human development, is the scientific and methodical study of systematic psychological changes that take place in human beings over the course of their life span. At first, the study of developmental psychology was only concerned with infants and children. But today, the field has grown to comprise of adolescence, adult development, aging, and the entire life span of an individual.
The lifespan perspective on human development, as mentioned, includes research from different perspectives, such as psychology, economics, biology, anthropology, and education. Developmentalists also understand that through each stage of development, an individual changes within his or her family environment, society, their neighborhood, and culturally, and does so in certain stages of development (Boyd & Bee, 2009).