Medians (across all participants) of the decision weights associated to behavioural, neural and neuro-behavioural methods, as a function of the degree of match, DoM, of the pair of stimuli used in a trial.

The DoM is the number of identical features the two stimuli in a pair have. Since each stimulus contains 6 features (the shape and colour of three polygons), in our experiments a pair including two identical stimuli has DoM of 6.