内源性注意与外源性注意对数字加工的不同影响

分别采用内源性注意和外源性注意实验范式，材料为小数（1－4）和大数（6－9）的中文与阿拉伯数字，任务为判断数字是否大于5，考察在注意与非注意条件下不同大小数字加工的距离效应和符号效应。结果发现：⑴在内源性线索和外源性线索的注意条件下，大小数都出现了距离效应；但在非注意条件下，内源性线索时的大小数都出现了距离效应，而外源性线索时只有小数出现了距离效应，大数的距离效应明显减弱或消失。⑵在内源性线索和外源性线索的注意条件下,大小数都没有出现符号效应；但在非注意条件下，大数没有出现符号效应，而小数出现了符号效应（阿拉伯数字的绩效比中文数字差），并且内源性线索时的符号效应强度小于外源性线索。

THE INFLUENCE OF ENDOGENOUS AND EXOGENOUS ATTENTION ON NUMBER PROCESSING

In the present study, two different experimental paradigms (with the endogenous cue and with the exogenous cue) were used to investigate the distance effect and the notation effect of numbers processing in attended and unattended condition. The stimuli were small numbers (1~4) and large numbers (6~9) in Chinese and Arabic. Subjects' task was to decide whether the presented number was larger or smaller than 5. The results showed that 1) the distance effect of both of small numbers and large numbers was not affected by the endogenous attention, but the distance effect of large numbers weakened or disappeared in unattended condition with exogenous cue; 2) the notation effect of small numbers appeared in unattended condition with both endogenous cue and exogenous cue, the subjects' performance on Arabic numbers was not as good as than that of Chinese numbers. Moreover, the influence of exogenous cue was larger than that of endogenous cue.