“…The absolute errors of normal approximations for martingales have been intensively studied ; see, for instance, Heyde and Brown [7], Haeusler [4], Haeusler and Joos [5], El Machkouri and Ouchti [1], Fan and Shao [3], Fan [2] and [8]. Suppose that E|X i | 2p < ∞ for some p > 1 and all i = 1, ..., n. Define…”