title: Unexpected effects of masking: differential EDR conditioning without relational learning.
mesh_terms: D001288:Attention; D003071:Cognition; D003214:Conditioning, Classical; D005712:Galvanic Skin Response; D006801:Humans; D008297:Male; D010470:Perceptual Masking; D011337:Probability Learning; D014705:Verbal Behavior