Table 2.

Parameter estimates of generalization functions and primitives

	c	d	σ (°)	R2
Φ(0, Δθl)	0.955	0.045	29.9	0.849
Φ(Δθr, 0)	0.377	0.623	38.5	0.940

Multiplicative	ar	br	σr (°)	al	bl	σl (°)
	1.00	0.318	27.2	1.00	0.0158	21.1

Additive	ar	σr (°)	al	σl (°)	b
	0.553	27.2	1.00	21.1	−0.252

Common	N	α	K	d(θl)
	100	0.996	0.00724	10 (θl = 0, 180)
				5 (θl = 90, 270)