In the very broadest sense, inorganic chemicals and compounds are defined by what they are not; they are not organic in nature, such that anything beyond biological, hydrocarbon, and other similar carbon-based chemicals may be considered inorganic.
Family Development Theory. n Family Development theory is an interdisciplinary approach of examining the family. n Involves biological, social, and psychological perspectives of development. Biological. n Biological needs in a family vary depending on the family structure and ages of its members.
By Kendra Cherry. Updated February 01, 2016. Jean Piaget's theory of cognitive development suggests that children move through four different stages of mental development. His theory focuses not only on understanding how children acquire knowledge, but also on understanding the nature of intelligence.