This nikaya consists of several thousand discourses ascribed to The Buddha and his chief disciples arranged in eleven "books", according to the number of Dhamma items referenced in them.
Translator Bhikkhu Bodhi wrote: "In Anguttara Nikaya, persons are as a rule not reduced to mere collections of aggregates, elements, and sense-bases, but are treated as real centers of living experience engaged in a heartfelt quest for happiness and freedom from suffering."
(from Intro to Samyutta Nikaya) The Anguttara Nikaya corresponds to the Ekottara Āgama ("Increased by One Discourses") found in the Sutra Pitikas of various Sanskritic early Buddhists schools, fragments of which survive in Sanskrit.
A complete version survives in Chinese translation by the name Zēngyī Ahánjīng (增一阿含經); it is thought to be from either the Mahāsāṃghika or Sarvāstivādin recensions.
According to Keown, "there is considerable disparity between the Pāli and the Sarvāstivādin versions, with more than two-thirds of the sūtras found in one but not the other compilation, which suggests that much of this portion of the Sūtra Piṭaka was not formed until a fairly late date.