Jitsumori M
Department of Cognition and Information Sciences, Faculty of Letters, Chiba University, Japan.
Q J Exp Psychol B. 1994 Nov;47(4):371-86.
Monkeys (Macaca mulatta) were trained to discriminate between sets of artificial stimuli such as those used by Jitsumori (1993) for pigeons and humans. The stimuli were arrays of symbols differing along three two-valued (positive or negative) dimensions. The discrimination required was between polymorphous categories in which a positive stimulus was defined by possession of any 2 out of 3 positive features. Of the 5 monkeys, 3 learned the discrimination much faster than did pigeons, but transfer to novel stimuli was less impressive than had been shown in pigeons. The 3 monkeys showed high levels of transfer to the stimuli that contained either all 3 positive or all 3 negative features, but 2 of the 3 monkeys failed to show transfer to stimuli that had 1 of the 3 features replaced with a novel one. Analysis of the monkeys' performance raised doubts on the additive integration of features but supported learning of feature combinations as a basis for the discrimination of polymorphous categories by this species.
猴子（恒河猴）经过训练，以区分人工刺激集，比如Jitsumori（1993年）用于鸽子和人类的那些刺激。刺激是沿三个二值（正或负）维度不同的符号阵列。所需的辨别是在多态类别之间，其中正刺激由拥有3个正特征中的任意2个来定义。在5只猴子中，3只学习辨别比鸽子快得多，但向新刺激的迁移不如在鸽子中表现得那么显著。这3只猴子对包含所有3个正特征或所有3个负特征的刺激表现出高水平的迁移，但3只猴子中有2只未能向3个特征中有1个被新特征取代的刺激表现出迁移。对猴子表现的分析对特征的加法整合提出了疑问，但支持将特征组合的学习作为该物种辨别多态类别的基础。
