Table 3.

Mean and 95% credibility intervals of the posterior distribution of the fixed terms defining a beta-generalized linear mixed model (beta-GLMM) describing the effect of color difference on the proportion of landings for a set of “blue” and “yellow” color stimulus by E. tenax

	“Blue”	“Yellow”
βo (Intercept)	−2.42 (−2.69, −2.14 95% CI)	−3.11 (−3.39, −2.82 95% CI)
β1 (Slope)	8.50 (5.80, 11.0 85% CI)	25.3 (21.4, 29.1 95% CI)

β_i are coefficients of a linear expression η=βo+β1 * (ΔC) relating the color distance (ΔC) between a stimulus and an achromatic target by means of the function π(ΔC)=exp(η)/(1 + exp(η)) (Hardin et al. 2007). The function π(ΔC) for the “blue” and “yellow” stimuli is presented in Figure 6.