其他摘要：Until recently it has been doubted whether animals below the primates, and in particularpigeons, are capable of learning to use a general conoept of identity joddity on perceptual patterns. The present report describes a new experiment, provides additional details concerning sorne earlier experiments and revíews two recent studies from other Iaboratorioes, AH the studics employed instrumental discrimination training procedures of the "matching-to-sample" or "oddity-from-sample" type followed by generallzation tests using stimuli that were novel to the subjects, The results of aH experiment concord in demostrating that domestic pígeons are capable of acquiring the logic "same/different" relation as well as of applying it to novel situations
