Abstract: All the previous research about unconscious thought has a problem, which is participants had no idea of the length of distraction time (they didn't know how long the time of unconscious thought was), thus they presented their results of unconscious thought under the condition of being controlled by their subjects. To solve this problem, we made some improvements on the previous research paradigm Dijksterhuis employed. Before engaging in unconscious thought, the participants were told the time the distraction task costs. Therefore, the participants can plan or control the emergence of the process and results of unconscious thought on their own. The experiment utilized a one-way between-participants design, with its independent variable being the time the participants were told before proceeding the distraction tasks and dependent variable being attitudinal difference score (the score of the most favorable roommate minus that of the worst one) One hundred and one undergraduate students (forty-two boys and fifty-nine girls) participated this study in exchange for credits. These participants were randomly assigned to four groups and completed a roommate decision task under one of the four experimental conditions: not knowing the time the distraction task costs (the same with Dijksterhuis,2004; Dijksterhuis & Nordgren, 2006)(which is called not knowing the time); being informed of a 3-minute distraction task and actually experienced a 3-minute one (informed 3 actually 3); being informed of a 5-minute distraction task but actually experienced a 3-minute one (informed 5 actually 3) and being told 3-minute distraction task but actually experienced a 5-minute one (informed 3 actually 5). 　　　The result showed a significant main effect for the four experimental conditions through variance analysis, F（3,97）=3.29，p<.05，η2=0.092. Multiple subsequent comparisons revealed that (1)the performance of the two groups “informed 3 actually 3” (M=19.69,SD=17.27) and “informed 3 actually 5”(M=17.84,SD=21.03) is better than the two groups “not knowing the time” (M= 8.80,SD=11.69) and “informed 5 actually 3” (M =8.72, SD =12.83) (p<.05); (2) the difference of performance between “informed 3 actually 3” and “informed 3 actually 5” is not significant (p＞.05); (3) the difference of performance between “not knowing the time” and “informed 5 actually 3” is also not significant (p＞.05). 　　The experiment results have demonstrated that individuals can plan or control the emergence of the results of unconscious thought on their own.

Key words: complex decision-making, the results of unconscious thought emerge as planned , unconscious thought effect,

摘要： 为探讨个体复杂决策过程中无意识思维结果浮现的计划性，考察了四组大学生被试（共101名）在“知觉不同分心时间”条件下的复杂决策。结果发现：（1）“告知分心3分钟，实际分心3分钟组（知3实3）”成绩显著优于“不知分心时间组”和“知5实3组”，但与“知3实5组”之间无显著差异，显示无意识思维结果浮现具有计划性；（2）“知3实5组”成绩显著优于“知5实3组”，与“不知分心时间组”为边缘显著，显示无意识思维结果浮现具有可延迟性；（3）“知5实3组”与“不知分心时间组”成绩之间无显著差异，显示无意识思维结果浮现具有精确的时间计划性，提前要求结果浮现不能出现无意识思维效应。上述结果支持了个体无意识思维结果浮现具有计划性的假设。

关键词: 复杂决策, 无意识思维结果浮现的计划性, 无意识思维效应