Gerald Malcolm Durrell was born in Jamshedpur, Bihar Province, India, on 7 January 1925, the fourth surviving child of Louisa Florence Durrell (nee NÃ©e), dixie aged-thirty, eight And Lawrence Samuel, durrell, forty a civil. engineer
In the 20th century, an American psychologist named Lawrence Kohlberg developed a model that explained how individuals develop morality. This model is known as Kohlberg's Stages of Moral Development. Kohlberg's model is composed of three stages, each of which includes two phases. The three stages are preconventional morality, conventional morality and postconventional morality.
Cognitive development is Jean Piaget's theory. Through a series of stages, Piaget proposed four stages of cognitive development: the sensorimotor, preoperational, concrete operational and formal operational period.The sensorimotor stage is the first of the four stages in cognitive development which extends from birth to the acquisition of language.hildren learn that they are separated from the environment. They have aspect of environment, even though they may be outside the reach of a child's senses. In this stage, according to Piaget, the development of object permanence is one of the most important accomplishments.