Abstract: A 2(learning blocks: 5 blocks vs. 10 blocks)×2(item type: old items vs. new items)×2（item match quality: positive match vs. negative match)experiment was designed to investigate the exemplar effects in the context of simple structure stimulus′ nonrule-feature perceptual saliency with changed Allan and Brooks′s paradigm. The results suggested that error rate and reaction time had exemplar effects, but none of effects were found on learning time.

Key words: categorization, exemplar effects, feature number, perceptual saliency

摘要： 用变化了的Allen和Brooks的实验范式,采用2（学习轮次：5轮、10轮）×2（项目类型：旧项目、新项目）×2（项目匹配性质：正向匹配、反向匹配）混合实验设计,研究对4个特征刺激分类时非规则特征突显条件下的样例效应。结果发现,无论是错误率还是反应时都取得了明显的样例效应,但是学习时间的影响不明显。

关键词: 分类, 样例效应, 特征数目, 特征突显度