Table 3.

Summary of regression analyses examining effects of speaker (20), vowel (6) and fricative (8) for each cue. Shown are R²_change values. Missing values were not significant (p>.05). The final column shows secondary analyses examining individual contrasts. Each cue is given the appropriate letter code if the effect size was Medium or Large (R²_change>.05). A few exceptions with smaller effect sizes are marked because there were few robust cues to non-sibilants. Sibilant vs. non-sibilant (/s, z, ∫, ʒ/ vs. /f, v, θ, ð/) is coded as S; voicing is coded as V; place of articulation in non-sibilants (/f, v/ vs. /θ, ð/) is coded as P_n; and place of articulation in sibilants (/s, z/ vs. /∫, ʒ/) is coded as P_s.

Cue	Contextual Factors		Fricative Identity df=7,2848	Cue for
	Speaker df=19,2860	Vowel df=5,2855
MaxPF	0.084*		0.493*	S, Ps
DURF	0.158*	0.021*	0.469*	S, V
DURV	0.475*	0.316*	0.060*	V
RMSF	0.081*		0.657*	S, V
RMSV	0.570*	0.043*	0.011*
F3AMPF	0.070*	0.028*	0.483*	S, Ps
F3AMPV	0.140*	0.156*	0.076*	Pn1, Ps
F5AMPF	0.077*	0.012*	0.460*	S
F5AMPV	0.203*	0.040*	0.046*
LF	0.117*	0.004+	0.607*	S, V
F0	0.838*	0.007*	0.023*
F1	0.064*	0.603*	0.082*	V2
F2	0.109*	0.514*	0.119*	S, Pn, Ps
F3	0.341*	0.128*	0.054*	Pn
F4	0.428*	0.050*	0.121*	Pn, Ps
F5	0.294*	0.045*	0.117*	Pn, Ps
M1	0.122*		0.425*	V, Ps
M2	0.036*		0.678*	S, V, Ps
M3	0.064*		0.387*	S, Ps
M4	0.031*		0.262*	Ps
M1trans	0.066*	0.043*	0.430*	S, V, Ps
M2trans	0.084*	0.061*	0.164*	Pn3, Ps
M3trans	0.029*	0.079*	0.403*	S, V, Pn, Ps
M4trans	0.031*	0.069*	0.192*	S, Pn, Ps

⁺p<.05

^*p<.0001

¹R²_change=.043

²R²_change=.045

³R²_change=.038