Affected the way adults treated children- often were laborers in fields, factories and mines. Chapter 1: child development: themes, theories and methods. A field of study that seeks to account for the gradual evolution of the child"s cognitive, social, emotional, and motor capacities and behaviors from the beginning of life through adolesence. Describing changes in the child"s observed behaviours and then uncovering the processes and strategies that underlie these changes. Interested in what things change and children get older and how these changes come about. Conducted research in infants" sensory capacities and young children"s emotions. In history, people viewed children as miniature adults. Experience is not the source of human knowledge because our sense are too fallible. Distinguishes between people who mistake sensory knowledge for the truth and people who really do see the truth. Posse"s innate sense of justice and morality that unfold over time. Children do not have innate knowledge: john locke.