摘要
考察范畴混合与预知靶子范畴对预搜索的影响。以2到9的汉字与阿拉伯数字为范畴材料,以搜索一个靶子数字(三、七、3或7)为任务,以预搜索为实验范式。在一些条件下,被试预知靶子的范畴,其它条件下则无法预知靶子的范畴。结果表明:(1)预知靶子范畴可以改进搜索;(2)当靶子与旧客体的范畴相同时,上述预期效应就会减弱;(3)当靶子与旧客体的范畴不同时,范畴预期效应又增加了。最后讨论了实验结果的理论意义。
The effects of category mixing and priortarget category knowledge on preview search were investigated in the present study. The categorical stimuli were Chinese and Arabian numbers in magnitudes from two to nine. Subjects＇task was to detect a target number （ three or seven in two kinds of numbers）. The experimental method was a preview search paradigm. In some conditions, subjects were told the target~ category; in others, they were not. The resuhs showed that： a） Foreknowledge of the target＇s category produced large improvement in search （Experiment 1 ） ; b） The magnitude of this anticipatory effect was reduced if the target shared its category with a single categorical set of previewed numbers （ Experiment 2） ; c） The magnitude of this effect was greatly increased when the target didnt share its category with a single categorical set of previewed numbers （ Experiment 3 ）. The implications of these results for current theories on visual selection were discussed.
出处
《心理学报》
CSSCI
CSCD
北大核心
2006年第2期170-180,共11页
Acta Psychologica Sinica
关键词
视觉选择性注意
预搜索效应
范畴表征
激活
抑制
visual selective attention, preview effect, categorical representation, activation, inhibition.
