Compare three major theoretical approaches to moral development: Kohlberg's stages of moral development, Gilligan's ethic of care, and Turiel's social domain theory. For each approach, explain its fundamental claims about how moral reasoning develops, the factors influencing this development, and the universality or cultural specificity of moral frameworks. Analyze the research methods used to develop and test each theory, and discuss their respective strengths and limitations. Evaluate how contemporary neuroscience research is informing and challenging these traditional theoretical frameworks for understanding moral development.