Subject groups.

Subjects were first objectively divided into two groups a priori according to their performance on the task as represented by the accuracy score listed here. Of 39 total subjects, 20 were classified as “Good-learner” subjects for whom choice accuracy was significantly greater than the chance score of 50% at the level of an individual subject (p p > 0.05). Standard deviations are listed in parentheses by the corresponding means within groups.本研究首先依据此处列出的准确率得分所体现的任务表现，先验地将全部受试者按照客观标准划分为两组。在总计39名受试者中，有20名被归类为"优秀学习者（Good-learner）"组，该组受试者的个体选择准确率在统计学上显著高于50%的机遇水平（p < 0.05）。各组的均值旁以括号标注了对应的标准差。