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目的:用单位时间正确率探讨不同刺激属性的短时记忆过程.方法:给30名男性军校学员一系列视觉刺激,刺激量从2~9共八个级别,刺激属性有阿拉伯数字、英文字母、有,无意义图形及有,无意义汉字等六种.用短时记忆瞬时记忆模式,记录被试作业的反应时与正确率,以单位时间正确率为指标进行分析.结果:①刺激属性与刺激量间存在明显的交互作用(P<0.05);②随着刺激量的增加,被试作业单位时间正确率下降;③刺激量具有不依赖刺激属性的“屋顶”效应及“地板”效应;④不同刺激属性在量上可分为3~5个不同任务难度的组群.结论:短时记忆容量为7±2,依赖人对记忆对象的熟悉程度;短时记忆信息提取为系列扫描过程中的从头至尾加工方式,但加工方式依赖于主体对客体的熟悉性.
Objective: To explore the short-term memory process of different stimulus attributes with the correct time of unit time. Methods: Thirty male cadets were given a series of visual stimuli. The stimuli were eight levels ranging from 2 to 9. The stimulating attributes were Arabic numerals, English alphabets, and meaningless graphics and six kinds of meaningless Chinese characters. Instant memory mode with short-term memory, recording the reaction time and correct rate of the test job, the correct rate of time per unit as an indicator for analysis. Results: ① There was a significant interaction between stimulus and stimulus (P <0.05); ② With the increase of stimulus, the correct time of work unit decreased; ③ The stimulation had “ ”Effect and“ floor ”effect; ④ different stimulus attributes in the volume can be divided into 3 to 5 different task difficulty group. Conclusion: The short-term memory capacity is 7 ± 2, which is dependent on people’s familiarity with memory objects. The extraction of short-term memory information is a processing method from start to finish in the series of scanning process, but the processing method depends on the subject’s familiarity with the object.