Table 2.

F0 contour and intensity characteristics in the cooperating, conflicting, and neutral conditions.

Parameter Condition	F0 contour (octaves)	Peak intensity ratio (dB)	Number of items in one run1
Cooperating (A1)	> 0 (5 steps)	> 0 (2 steps)	80
Cooperating (A2)	< 0 (3 steps)	< 0 (2 steps)	48
Conflicting (B1)	> 0 (5 steps)	< 0 (2 steps)	80
Conflicting (B2)	< 0 (3 steps)	> 0 (2 steps)	48
Neutral (N)	= 0 (1 step)	−10 to 10 (5 steps)	40

¹Number of items was derived by multiplying the step numbers for F0 contour and for peak intensity ratio, by the fixed step numbers for the other two acoustic parameters that were roved (i.e., 2 steps for F0 height & 4 steps for duration ratio) [A1 & B1: 5 * 2 * 2 * 4 = 80; A2 & B2: 3 * 2 * 2 * 4 = 48; N: 1 * 5 * 2 * 4 = 40]. The stimulus presentations were performed in two runs, in each listening condition (CI: full-spectrum; NH: full-spectrum, 8- and 4-spectral channels). Thus, under each listening condition, the total number of tokens played to each listener was 160 [i.e., 2 * 80], 96 [i.e., 2 * 48)], and 80 [i.e., 2 * 40] in the cooperating, conflicting, and neutral condition, respectively. In all conditions, the two acoustic parameters, F0 height and duration ratio, were controlled in the logistic models that examine the estimated coefficient for F0 contour or peak intensity ratio in each of the cooperating, conflicting, and neutral conditions.