6岁儿童的类别学习能力: 类别表征、注意和分类策略

在实验室条件下对人类的学习进行心理学研究,通常的做法是在一定时间内让被试习得一项新的世界知识,因此类别学习成了主要的任务范式,一直是认知心理学最热点的研究领域之一。首先,梳理了类别学习的认知和神经研究;然后,分析了皮质—纹状体回路与类别学习的关系,进而提出类别学习的神经机制是以基底核为纽带,皮质—纹状体的四条回路为实现途径的理论设想;最后,讨论了如何从学习条件、学习过程和学习结果三方面去探讨类别学习的认知神经机制。     

Musth in elephants

Animal behaviour is intimately connected with chemical signaling, often through glandular secretions. This is very significant and obvious in Asian male elephants during their musth period when their temporal glands secrete a fluid with a characteristic odor. Musth gland activity greatly influences the elephant society as well as manelephant interaction.