采用Monty Hall Dilemma的经典研究范式,探讨了大学生被试在不同提示条件下对MHD问题的解决情况,结果发现只有在条件关系提示下,MHD的作业成绩才得到了明显的改善,但是正确率也只有35.7%。这表明MHD问题困难的原因很可能是多方面的,如认为主持人的行为完全是随机事件,很难意识到参与者的最初选择与主持人打开特定盒子间的三种条件关系;多数被试作出选择的理由是非理性的,如“坚持第一选择,相信自己的直觉”;不能正确判断MHD问题的内在概率关系以及缺乏认真思考的动力等。 相似文献
Evidence from a range of fields shows that representation-connection (RC) is the key step towards the solution of a real-world insight problem. However, no study has focused on the inter-individual variability in RC, and little is known about whether structural and resting-state functional signals can account for inter-individual differences in RC. Combining structural (regional grey matter density, rGMD) and functional (fractional amplitude of low-frequency fluctuations (fALFF) and resting-state functional connectivity (RSFC)) analysis approaches was used to examine the neural substrates of RC. The results showed that the RC score was positively correlated with rGMD and fALFF values in the bilateral lingual gyrus (LG), which might be related to relevant visual imagery during the correct matching of a specific prototype with an unsolved technical problem and the retrieval and application of key information from prototypes. In addition, the RC score was negatively correlated with the rGMD in the left dorsolateral prefrontal cortex (DLPFC), and functional connectivity analysis revealed that a higher RC score was inversely correlated with the strength of the RSFC between the right LG and the left inferior parietal lobule (IPL), which indicated that RC might be supported by decreased response inhibition and the automatic association of semantics. 相似文献
The Bullying Participant Behaviors Questionnaire (BPBQ) is an efficient self-report measure for investigating bullying participant role behaviors. The present study evaluated the psychometric properties of the BPBQ in a Chinese middle school sample. A total of 516 middle school students (47.7% girls; age range?=?12–14 years) were recruited from an urban middle school in China. Results revealed that a five-factor model fit the data best. Correlations between the BPBQ subscale scores and the external criterion variables, including empathy and sympathy, moral disengagement, and trait anger, provided evidence of criterion validity. Furthermore, the BPBQ had good alpha reliability and moderate to good test-retest reliability. In conclusion, the BPBQ is a promising assessment tool to measure bullying participant behaviors among Chinese middle school students.
Positive risk-taking is a crucial element of individual creativity and social development. However, little is known regarding the relation between individual neural differences and positive risk-taking. In addition, critical thinking (CT) and gender have been proven to be two important individual-specific factors associated with risk-taking behaviour, and different levels of CT and gender may have diverse effects on the relationship between brain structure and positive risk-taking. The present study examined the relationship between positive risk-taking and regional grey matter volume (rGMV) in 292 healthy participants. The results showed that positive risk-taking was significantly positively associated with the rGMV of the posterior cingulate cortex (PCC). In addition, this study investigated individual differences in critical thinking and found that it moderated the relationship between rGMV and positive risk-taking. Individuals with lower CT had a stronger association between rGMV and positive risk-taking. Further analysis showed that for males, a greater rGMV was significantly linked to higher positive risk-taking tendency. These findings suggest that PCC evaluates risk and serves as a behavioural adaptation hub for positive risk-taking. This study thereby contributes to the literature on individual differences in brain structure and risk-taking by elucidating the moderating effects of CT and gender in healthy adults. 相似文献
The use of multidimensional forced-choice (MFC) items to assess non-cognitive traits such as personality, interests and values in psychological tests has a long history, because MFC items show strengths in preventing response bias. Recently, there has been a surge of interest in developing item response theory (IRT) models for MFC items. However, nearly all of the existing IRT models have been developed for MFC items with binary scores. Real tests use MFC items with more than two categories; such items are more informative than their binary counterparts. This study developed a new IRT model for polytomous MFC items based on the cognitive model of choice, which describes the cognitive processes underlying humans' preferential choice behaviours. The new model is unique in its ability to account for the ipsative nature of polytomous MFC items, to assess individual psychological differentiation in interests, values and emotions, and to compare the differentiation levels of latent traits between individuals. Simulation studies were conducted to examine the parameter recovery of the new model with existing computer programs. The results showed that both statement parameters and person parameters were well recovered when the sample size was sufficient. The more complete the linking of the statements was, the more accurate the parameter estimation was. This paper provides an empirical example of a career interest test using four-category MFC items. Although some aspects of the model (e.g., the nature of the person parameters) require additional validation, our approach appears promising. 相似文献
The bioethical dilemmas receiving the most attention in China now relate to the two ends of life: birth and death. On one end are issues relating to reproductive technology, especially birth control and family planning; at the other end is euthanasia...More research and discussion among people from various fields is needed. Progress will be made one step at a time, and I recommend that we proceed now to win acceptance of brain death criteria; to make clear the distinctions between passive and active euthanasia,...to encourage the use of living wills; and to protect the interests of newborns who are not terminally ill, including those with mild defects. In the changing context of modernization, in which different and even incompatible value systems must coexist, it is best for us to approach the ethical dilemmas facing us with mutual respect and understanding. 相似文献