概率类别学习的线索位置和通道效应

The Cue Location and Modality Effect of Probabilistic Category Learning

概率类别学习是类别学习的一种重要形式,研究通过操作线索呈现位置和刺激输入通道来探讨其对概率类别学习的影响。实验采取2(线索位置固定/线索位置随机)×2(视觉刺激任务/听觉刺激任务)的组间设计。结果发现:(1)存在线索位置效应,当4种线索在每个试次中出现的位置固定时,概率类别学习倾向于外显学习,而当4种线索在每个试次中出现的位置随机时,概率类别学习倾向于内隐学习;(2)没有通道效应,视觉通道和听觉通道的概率类别学习成绩整体上没有显著差异;(3)当线索呈现位置随机时,概率类别学习的认知表征具有通道通用性(modalitygeneral)特征。

Probabilistic category learning is an important form of category learning. This thesis investigated the positions of all cues and modality effects on probabilistic category learning. Experiment adopted 2（ constant / random） ＊ 2（ visual / auditory） between group design. The results showed that（ 1） there exist clue position effects,and when the positions of all cues were held constant,probabilistic category learning was an explicit learning process. However,when the positions of all cues were random,it was an implicit learning process.（ 2） There exist no channel effects,and there is no obvious difference between the visual channel study performance and the auditory one.（ 3） When the positions of all cues were random,the cognition representation of probabilistic category learning in knowledge is modality- general.