Coefficients for the mixed-effects model fitted to the median by-suffix latencies. For stratum, the reference level was 'Germanic'; for experiment, the reference level was 'lexical decision'. Mean CO-rank2 denotes the quadratic term for mean CO-rank. Estimate: estimated coefficient, HPD lower/higher: 95% HPD intervals based on 10,000 MCMC samples, p: two-tailed MCMC probability.