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THE ROLE OF PHYSICAL IDENTITY OF THE SAMPLE AND CORRECT COMPARISON STIMULUS IN MATCHING‐TO‐SAMPLE PARADIGMS 1
Author(s) -
Santi Angelo
Publication year - 1978
Publication title -
journal of the experimental analysis of behavior
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.75
H-Index - 61
eISSN - 1938-3711
pISSN - 0022-5002
DOI - 10.1901/jeab.1978.29-511
Subject(s) - stimulus (psychology) , stimulus control , psychology , discrimination learning , second order stimulus , communication , cognitive psychology , pattern recognition (psychology) , neuroscience , nicotine
Pigeons were trained in a higher‐order conditional discrimination paradigm to assess the role of physical identity in a within‐subjects design. A line orientation which was superimposed on all response keys signalled whether a response to the matching color or a response to the nonmatching color was correct. Following training under this paradigm, stimulus control gradients were obtained by varying the angularity of the lines. Orderly gradients of stimulus control were obtained and no bias toward or away from the physically identical comparison stimulus was observed. The data were interpreted as indicating that the pigeons acquired a discrimination for each specific stimulus configuration or a set of specific stimulus‐response chains based on compound stimuli in which physical identity played no special role.