抑制分数比较任务中的整数偏差：一项事件相关电位研究。
Inhibiting the Whole Number Bias in a Fraction Comparison Task: An Event-Related Potential Study.
作者信息
Fu Xinchen, Li Xiaodong, Xu Ping, Zeng Jie
机构信息
Faculty of Psychology, School of Psychology, Beijing Normal University, Beijing 100875, People's Republic of China.
School of Psychology, Shenzhen University, Shenzhen, Guangdong 518060, People's Republic of China.
出版信息
Psychol Res Behav Manag. 2020 Mar 6;13:245-255. doi: 10.2147/PRBM.S240263. eCollection 2020.
INTRODUCTION
People often use heuristics derived from natural number tasks to solve fraction comparison tasks. For instance, one may falsely consider a fraction with a larger natural number to be the larger in magnitude, as in the case of 1/5 vs 1/4. We hypothesized that inhibitory control was needed to overcome this type of bias.
METHODS
To test the hypothesis, Event-related potentials (ERP) were collected when participants were conducting fraction comparison tasks that designed with the negative priming paradigm. Twenty-eight adult participants performed three types of fraction comparison tasks: congruent items, incongruent items and neutral items.
RESULTS
We found a negative priming effect in terms of response time. Consistently, ERP results demonstrated larger N1 and N2 amplitudes and a smaller P3 amplitude in the test trial than in the control trial.
CONCLUSION
These findings indicated that adults still need to inhibit the "larger natural number-larger fraction" misleading strategy when solving fraction comparison tasks with common components.
引言
人们常常使用从自然数任务中衍生出的启发式方法来解决分数比较任务。例如，人们可能会错误地认为自然数较大的分数其数值也更大，就像在比较1/5和1/4的情况中。我们假设需要抑制控制来克服这种偏差。
方法
为了验证这一假设，当参与者进行采用负启动范式设计的分数比较任务时，收集了事件相关电位（ERP）。28名成年参与者进行了三种类型的分数比较任务：一致项目、不一致项目和中性项目。
结果
我们在反应时间方面发现了负启动效应。同样，ERP结果表明，与对照试验相比，测试试验中的N1和N2波幅更大，P3波幅更小。
结论
这些发现表明，成年人在解决具有共同成分的分数比较任务时，仍然需要抑制“自然数越大 - 分数越大”这种误导性策略。
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