ABSTRACT
Psychology has two traditional definitions: 'the science of behaviour', what people observes to do, and 'the science of mental life', which implies more attention to unobservable events such as thoughts. The research literature on psychoneuroendocrinology, epidemiology, and psychology suggest that control which stems from a generally warm relationship, clarifies limits, and explains itself tends to have positive effects, or which implies negative judgments of the child's rights, may be harmful. The theory about what love does for people has developed in ways that involve contributions from many scientific disciplines-evolutionary theory, brain development, endocrinology, ethology, anthropology, and is one of the star areas of developmental psychology. At the core of the psychology of the John Bowlby's work on attachment, which is influenced by a wide range of factors-his own personal history, his observation of deeply troubled children in a school, his training in psychoanalysis, his scientific interest in evolution and animal behaviour.
