 According to Wynne, this stress on mindfulness may have led to the intellectualism which favoured insight over the practice of "dhyana".Grouped into the "jhana"-scheme are four meditative states, referred to in the early texts as "aruppas".These are also referred to in commentarial literature as immaterial/formless "jhānas" ("arūpajhānas"), also translated as The Formless Dimensions, in distinction from the first four "jhānas" ("rūpa jhānas").