Table 1.

Median best-fitting SCRI parameter values (see Table A1 for definitions). Empty cells (—) indicate parameters that were not applicable or identifiable depending on the experimental manipulation. Note that match values for distractors are given in terms of the ratio of their match to that of a corresponding target (i.e., $\frac{{\mu }_D}{{\mu }_T}$and $\frac{{\mu }_{DH}}{{\mu }_{TH}}$). In addition, the shape s and rate r of the Gamma distribution used to model the localization signal are transformed for interpretability into the peak (mode; ω_p) and spread (standard deviation; ω_s) of the distribution, which are measured in milliseconds after array onset. Specifically, $r=\frac{{\omega }_p+\sqrt{{\omega }_p^2+4{\omega }_s^2}}{2{\omega }_s^2}$and s = 1 + ω_pr.

	All	Set size	Similarity
			Color	Motion
b	0.0017	0.0021	0.0006	0.0008
ι	0.1240	0.1830	0.0516	0.0366
ω p	81.0	110.0	66.9	40.1
ω s	13.20	18.80	2.75	2.37
λ v	0.0541	0.0712	0.0533	0.0347
λ z	0.3760	0.6100	0.2490	0.0247
μ t	0.0332	0.0221	0.1460	0.0083
μ tH	—	—	—	0.0033
$\frac{{\mu }_D}{{\mu }_T}$	0.464	0.401	0.726	0.394
$\frac{{\mu }_{DH}}{{\mu }_{TH}}$	—	—	0.882	0.608
α x	—	0.0065	—	—
α z	0.0675	0.0035	0.8350	0.1990
β v	0.0621	0.5880	0.0095	0.0043
β z	0.5980	0.6040	0.7240	0.0275
ρ v	—	0.368	—	—
ρ z	—	2.37	—	—
κ	0.197	0.000	0.281	0.561