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A comparative analysis of the categorization of multidimensional stimuli: I. Unidimensional classification does not necessarily imply analytic processing; evidence from pigeons (Columba livia), squirrels (Sciurus carolinensis), and humans (Homo sapiens).
Wills AJ, Lea SE, Leaver LA, Osthaus B, Ryan CM, Suret MB, Bryant CM, Chapman SJ, Millar L. Wills AJ, et al. Among authors: leaver la. J Comp Psychol. 2009 Nov;123(4):391-405. doi: 10.1037/a0016216. J Comp Psychol. 2009. PMID: 19929108
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