Leslie White •Technology is key to understanding growth & development of human culture. The subject was once viewed as a unilinear phenomenon that describes the evolution of human social behavior. The second stage is that they also used domesticated animals to do their work. Cultural evolution, the development of cultures from simpler to more complex forms. It is a mechanism for providing subsistence, protection, offense and defense, social regulation, cosmic adjustment and recreation. According to Leslie, “culture evolves as the amount of energy harnessed per capita per year increases or as the efficiency of the means of putting this energy to work is increased.” •Culture is means by which humans carry on the life process. Foetus in the womb . He distinguishes four stages of human development, based on advances in the history of communication. In the first stage, information is passed by genes. Leslie White, Leslie view technology as a component of culture in addition to ideology and sociology all of which are continuously changing thus leading to a general evolution of culture. The early stages of adolescence encompass the time when we encounter, in earnest, the sobering imperfections of life under the duress of the human condition. Introduction to Child Development 5 conflict here is the desire to satisfy these bodily functions immediately, clashing with the parent’s desire to toilet-train the infant. Leslie White was an American cultural anthropologist known for his neo-evolutionary viewpoint. This is called the foetus. The species: the first half of Homo habilis’ reign – 2 to 1.5 million years ago; the individual – 12 and 13 years old. It is now understood as a multilinear phenomenon that describes the evolution of individual cultures or societies. In the fourth, they learn to use the energy of natural resources: coal, oil, gas. Stages of Human Life Cycle . •To serve these needs, energy is required. White differentiated five stages of human development based on the nature of energy used. Leslie White was a man who explained the process of human development.White explained that human development had stages, and the first stage showed the use of energy from their muscle. The child then moves on to the phallic stage when they are between 3 and 6 years old: it is around these ages that sexual pleasure becomes centred on the genitals. In the second state, with the development of agriculture, humans are able to pass information through individual experience. Stage 1 . In the first stage, people use energy of their own muscles.In the second, they use energy of domesticated animals.In the third, they use the energy of plants (here White considers the agricultural revolution significant). An example was the use of the harness where the carts used to pull the cart. An egg from the mother is fertilised by a sperm from the father and turns into an embryo inside the mother’s womb. Early Adolescence. White was born in Salida, Colorado, on January 19, 1900 and planned a career in the natural sciences before joining the Navy during World War I. In the third, humans begin to use signs and develop logic. By about eight weeks this bundle of cells gradually turns into the shape of the human body. At first this creation looks like a bundle of cells.