Fig. 6

Descriptor usage and familiarity. a Descriptor usage for all subjects (with 99 % confidence interval indicated). 100 % would correspond to a descriptor assigned to all stimuli by all subjects. b Descriptor usage per subject. Left all descriptors (maximum possible value: 20,000). Right “chemical” and “fish” descriptors (maximum possible value: 1000). Data from 55 individual subjects (blue) and median and first and third quartiles (black). c Descriptor usage for “chemical” and “edible” for all stimuli (99 % confidence interval indicated), with responses divided according to unknown (left: N = 28,703 responses) and known (right: N = 12,586 responses) stimuli. 100 % would correspond to a descriptor assigned to all stimuli by all subjects. d Correlation between familiarity ratings and the ratings of 20 descriptors. The grey area along the x-axis indicates the range of correlations that are not statistically significant (after Bonferroni correction; N = 41,289, p > 0.0025). e Average familiarity and pleasantness ratings for 1000 stimuli