Relatively independent streams or capacities that proceed through levels of development. Howard Gardner’s theory of Multiple Intelligences is one example of the study of developmental lines. There is evidence for over a dozen developmental lines, including cognitive, moral, self-identity, aesthetic, kinesthetic, linguistic, musical, and mathematical. Integral Theory generally classifies these lines according to one of three types: cognitive lines (as studied by Jean Piaget, Robert Kegan, Kurt Fischer, etc.); self- related lines (e.g., morals, self-identity, needs, etc.); and capacities or talents (e.g., musical capacity, kinesthetic capacity, introspective capacity). Cognitive development is necessary but not sufficient for development in the self-related lines and appears to be necessary for most of the capacities.