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.
Let's review. Developmental psychologist Jean Piaget developed a theory of cognitive development that includes four distinct stages. The concrete operational stage is the third stage. Most children will enter this stage somewhere around the ages of seven to eleven years old. The concrete operational stage is signified by the child's ability, or inability, to master the conservation task.