摘要目的 探讨智力在听障儿童信息加工速度与数量加工之间的中介作用.方法 采用选择反应时任务、点阵比较任务和瑞文推理测验(简化版)对249名听障儿童进行试验测查,采用逐步回归法检验智力在听障儿童信息加工速度与数量加工间的中介效应,并用Bootstrap法进行验证.结果 (1)听障儿童的信息加工速度正确率(0. 89± 0. 18)与数量加工正确率( 0. 65 ± 0. 15)、智力(11. 83±10. 34)呈显著正相关(r=0. 165,0. 263;均P<0. 01),听障儿童的信息加工速度反应时(0. 59± 0. 39)s与数量加工正确率、智力呈显著负相关(r=-0. 164,-0. 197;均P<0. 05),听障儿童的智力与数量加工(正确率、反应时)呈显著正相关(r=0. 269,0. 140;均P<0. 05);(2)信息加工速度正确率显著正向预测听障儿童数量加工正确率( β=0. 17,t=2. 64,P<0. 01),信息加工速度反应时显著负向预测听障儿童数量加工正确率(β=-0. 16,t=-2. 61,P<0. 05),智力在信息加工速度(正确率、反应时)与听障儿童数量加工(正确率)之间起完全中介作用,效果量分别为36. 71%、31. 25%.结论 信息加工速度可以通过智力间接影响听障儿童的数量加工能力.

abstractsObjective To explore the mediating role of intelligence in the relationship between in-formation processing speed and numerical magnitude processing of hearing-impaired children. Methods A survey was conducted among 249 hearing-impaired children by using tests of Choice Reaction Time,Numero-sity Comparison,and Raven's Progressive Matrices( simplified version). Results (1) The accurate rate of information processing speed(0. 89±0. 18)of hearing-impaired children was positively correlated with that of numerical magnitude processing(0. 65±0. 15)and intelligence(11. 83±10. 34)(r=0. 165,0. 263,both P<0. 01). The reaction time of information processing speed was negatively correlated with those of numerical mag-nitude processing and intelligence(r=-0. 164,-0. 197,both P<0. 05). And there was significant positive correlation between intelligence and numerical magnitude processing (accurate rate and reaction time ) (r=0. 269,0. 140,both P<0. 05). ( 2) The accurate rate of information processing speed significantly predicted that of numerical magnitude processing in hearing-impaired children( β=0. 17,t=2. 64,both P<0. 01). The reaction time of information processing speed significantly predicted that of numerical magnitude processing in hearing-impaired children(β=-0. 16,t=-2. 61,both P<0. 05). And intelligence played a complete medi-ating role in this relationship and the moderating effect were 36. 71% and 31. 25%. Conclusion Information processing speed has indirect effects on numerical magnitude processing through intelligence in hearing-im-paired children.