the term misopédie – hatred of children), and confirmed by Aubry and several theses. These early French observations failed to cross the language barrier, and other nations remained ignorant of the cause of many traumatic lesions in infants and toddlers; almost one hundred years would pass before humankind began to systematically confront Tardieu's "appalling problem". In the 20th century, evidence began to accumulate from pathology and paediatric radiology, particularly in relation to chronic subdural haematoma and limb fractures: subdural haematoma had a curious bimodal distribution, idiopathic in infants and traumatic in adults, while unexplained ossifying periostitis of the long bones was similar to that occurring after breech extractions. In 1946, John Caffey, the American founder of paediatric radiology, drew attention to the association of long bone fractures and chronic subdural haematoma, and, in 1955, it was noticed that infants removed from the care of aggressive, immature and emotionally ill parents developed no new lesions. As a result, professional inquiry into the topic began again in the 1960s. The July 1962 publication of the paper "The Battered Child-Syndrome" authored principally by a pediatric psychiatrist C. Henry Kempe and published in The Journal of the American Medical Association represents the moment that child maltreatment entered mainstream awareness. Before the article's publication, injuries to children—even repeated bone fractures—were not commonly recognized as the results of intentional trauma. Instead, physicians often looked for undiagnosed bone diseases or accepted parents' accounts of accidental mishaps such as falls or assaults by neighborhood bullies. The study of child abuse emerged as an academic discipline in the early 1970s in the United States. Elisabeth Young-Bruehl maintained that despite the growing numbers of child advocates and interest in protecting children which took place, the grouping of children into "the abused" and the "non-abused" created an artificial distinction that narrowed the concept of children's rights to simply protection from maltreatment, and blocked investigation of how children are discriminated against in society generally. Another effect of the way child abuse and neglect have been studied, according to Young-Bruehl, was to close off consideration of how children themselves perceive maltreatment and the importance they place on adults' attitudes toward them. Young-Bruehl wrote that when the belief in children's inherent inferiority to adults is present in society, all children suffer whether or not their treatment is labeled as "abuse". Definitions Definitions of what constitutes child abuse vary among professionals, between social and cultural