启动刺激含有多个靶子条件下的负启动效应

采用数字命名任务，在通常的负启动范式基础上增加启动刺激靶子数目．进行了两个实验。实验一发现，当启动刺激靶子个数为1个和2个时。出现负启动效应；当启动刺激靶子个数为3个和4个时。则不出现负启动效应。这提示靶子所获注意资源数量的作用。实验二发现．当启动刺激有2个和3个靶子时．如果未被选择来反应的靶子成为探测刺激的靶子，其反应时与控制组无显著差异。即不出现负启动。这表明在启动刺激中未被选择来反应的靶子与干扰项所受到的加工是有差别的。

Negative Priming with the Prime Containing More Than One Target

Two experiments with the digit naming task were carried out on negative priming. A new paradigm was used with the prime containing more than one target (but only one of them to be responded) . College students were tested. Experiment I showed that the negative priming effect appeared only when the prime contained 1 or 3 targets, and no negative priming was found when the prime contained 3 or 4 targets. Experiment II showed that there was no negative priming effect when the target of the probe was the one among others in the prime which was not selected for response. The results implied the role of attention in the origin of negative priming, and indicated the difference between target target selection and target distractor selection in the processing mechanism.