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.
Theories of Cognitive Development. Cognitive development refers to the change in childrenâs patterns of thinking as they grow older. Jean Piagetâs Stage Theory. The scientist best known for research on cognitive development is Jean Piaget (see pages 72â75), who proposed that childrenâs thinking goes through a set series of four major stages.