记忆是人的高级心理功能，智力落后儿童智力低下的表现之一就是记忆力差。短时记忆在记忆中占重要地位，短时记忆广度被看为是短时记忆的重要指标。本文主要通过实验研究分析年龄、性别、智商和感觉通道对智力落后儿童短时记忆广度的影响，其结论是：①智力落后儿童数字类短时记忆广度智商和年龄两因素的交互作用显著，汉字类短时记忆广度受年龄影响显著。②智力落后儿童的数字类和汉字类短时记忆广度没有明显的性别差异。③智商对智力落后儿童的数字类和汉字类短时记忆广度有显著影响④智力落后儿童的视觉短时记忆广度和听觉短时记忆广度有明显差异。

The memory is human's high-level psychological function, one of mental retardation child's intelligence low performance is the memory weak.The short-term memory occupies the important status in the memory, the short-term memory span is regarded as an important target of the short-term memory. This article mainly through experimental study analysis age, sex, intelligence quotient and feeling channel to mental retardation child's short-term memory span influence, the conclusion is：①The mental retardation child numeral short-term memory span intelligence quotient and the age correlation is remarkable, the Chinese character short-term memory span is been remarkable the age influence.②The mental retardation child's numeral and Chinese character short-term memory span not obvious difference at sex.③The intelligence quotient and the Chinese character short-term memory span has the remarkable influence to the mental retardation child's numeral.④The mental retardation child's visual short-term memory span and the sense of hearing short-term memory span has the obvious difference.