“…This form of dependency has also been found with two nonphonetic dimensions, e.g., pitch and intensity (Wood, 1975a). Asymmetric or unidirectional dependencies have been obtained when one dimension signaled a phonetic distinction (place of articulation) and the other signaled a nonphonetic dimension (pitch) (Wood, 1974), and when both dimensions were nonphonetic in nature (e.g., rise time and intensity) (Blechner, Day, & Cutting, 1976;and see Pastore, Ahroon, Puleo, Crimmins, Golowner, & Berger, 1976). Although it is not yet possible to specify the acoustic characteristics of the dimensions that lead to one form of dependency rather than another, it is clear that it is not related simply to the distinction that is often made between phonetic and nonphonetic aspects of acoustic information.…”