Due to the nature of phrenology people were naturally considered unequal, as very few people would have a naturally perfect balance between organs. Thus education would play an important role in creating a balance through rigorous exercise of beneficial organs while repressing baser ones. One of the best examples of this is Félix Voisin, who, for approximately ten years, ran a reform school in Issy for the express purpose of correction of the mind of children who had suffered some hardship. Voisin focused on four categories of children for his reform school: Slow learners Spoiled, neglected, or harshly treated children Willful, disorderly children Children at high risk of inheriting mental disorders Criminology Phrenology was one of the first to bring about the idea of rehabilitation of criminals instead of vindictive punishments that would not stop criminals, only with the reorganizing a disorganized brain would bring about change. Voisin believed along with others the accuracy of phrenology in diagnosing criminal tendencies. Diagnosis could point to the type of offender, the insane, an idiot or brute, and by knowing this an appropriate course of action could be taken. A strict system of reward and punishment, hard work and religious instruction, was thought to be able to correct those who had been abandoned and neglected with little education and moral ground works. Those who were considered intellectually disabled could be put to work and housed collectively while only criminals of intellect and vicious intent needed to be confined and isolated. Phrenology also advocated variable prison sentences, the idea being that those who were only defective in education and lacking in morals would soon be released while those who were "mentally deficient" could be watched and the truly abhorrent criminals would never be released. For other patients phrenology could help redirect impulses, one homicidal individual became a butcher to control his impulses, while another became a military chaplain so he could witness killings. Phrenology also provided reformist arguments for the lunatic asylums of the Victorian era. John Conolly, a physician interested in psychological aspects of disease, used phrenology on his patients in an attempt to use it as a diagnostic tool. While the success of this approach is debatable, Conolly, through phrenology, introduced a more humane way of dealing with the mentally ill. The first phrenological testimony in a court of law was solicited by American lawyer John Neal in Portland, Maine, in 1834.