Understanding how development varies both inter- and intraspecifically can be important for systematic and evolutionary studies. This review will explore three different ways such understanding can be ...

It should be understood that I have emphasized the importance of Piaget’s cognitive developmental stages in a child’s intellectual progression for one simple reason: its four-stage progress and its ...

Erik Erikson developed a psychosocial stage theory that illuminates how people progress through certain stages during their lifespans. The stages in this theory of development may be negotiated poorly ...

In 1965, psychology professor Bruce Tuckman developed his theory of the stages of group development. He remarked about how a group dynamic, whether that group is a business organization, non-profit ...

The sensorimotor stage is the first of the four stages of Piaget’s theory of cognitive development. It is marked by a child’s knowledge that the outside world exists separately from themselves. Once ...

A new developmental theory is reshaping how experts understand the reliability of children's and adolescents' memories of traumatic events and adverse experiences. Subscribe to our newsletter for the ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 86, No. 8 (Apr. 15, 1989), pp. 2554-2558 (5 pages) We have identified an erythroid-specific enhancer element far ...