The difference in the warning effect of different warning signs.

Introduction. Warning signs play a very important role in safeguarding life and property in dangerous situations. Previous studies have mainly focused on the physical properties of warning signs, and few studies have been conducted on the different types. Methods. In Experiment 1, the oddball paradigm and the go/no-go paradigm were used to study the warning effect of different types of warning signs. In Experiment 2, the dual-task paradigm was adopted. Results. In Experiment 1, the results showed that a warning sign with text as content had the worst warning effect, followed by the combination of image and text, and a warning sign with an image as content had the best warning effect. In Experiment 2, it was found that different types of warning signs would have different effects on the performance of the secondary task. Conclusions. The reason for this may be the different processing methods used for text and image. Therefore, in dangerous situations that require a quick response, simple and understandable graphics should be used as the content of warning signs. In complex circumstances, it may be necessary to use a combination of image and text for warning sign content.

The Effect of the Quantity and Distribution of Teammates' Tendency Toward Self-Interest and Altruism on Individual Decision-Making.

Previous studies have explored the impact of the cost ratio of individual solutions versus collective solutions on people's cooperation tendency in the presence of individual solutions. This study further explored the impact of team credibility on people's propensity to cooperate in the presence of individual solutions. Study 1 investigated the influence of different level of altruistic tendencies or the self-interest tendencies of teammates on participants' decision-making. Study 2 explored the influence of the distribution of altruistic tendencies or self-interest tendencies on participants' decision-making. The results of Study 1 showed that the proportion of participants who chose the collective solution increased with an increase in the altruistic tendencies of the team. When the altruistic tendencies of the teammates reached a certain value, the proportion of participants taking the collective solution showed a trend to stabilize. Furthermore, the proportion of participants who chose the individual solution increased with the increase in the self-interest tendencies of the team. When the self-interest tendencies of the teammates reached a certain value, the individual solution was stably adopted. The results of Study 2 showed that with the total altruistic tendency remaining unchanged, the more altruistic group members that altruistic tendencies were allocated to, the higher a participant's level of trust in the team would be, which showed the decentralized effect of altruistic tendencies. In the case that the total self-interest tendency was unchanged, the fewer self-interest group members the self-interest tendencies were allocated to, the higher a participant's level of trust in the team would be, which showed the convergent effect of self-interest tendencies.

Interhemispheric functional connectivity and its relationships with creative problem solving.

Creative problem solving (CPS) is a particular mental process when people solve problems. Findings from previous research, which used functional MRI, showed that CPS could involve specific neural mechanisms. However, few studies have directly explored the changes of interhemispheric resting-state functional connectivity during CPS. Recently, a validated voxel-mirrored homotopic connectivity (VMHC) method has been widely used to calculate the interhemispheric resting-state functional connectivity. In this study, we recruited 60 participants and used a revised chunk decomposing task to estimate participants' individual differences during CPS. Then, the VMHC method was used to explore neural correlates underlying individual differences of CPS. Results showed that altered VMHC in the bilateral middle frontal gyrus/precentral gyrus, bilateral hippocampus/insula/amygdala, and bilateral fusiform gyrus/cerebellum/middle occipital gyrus was related to individual differences of CPS. These brain regions reflect the information integration of both hemispheres might be critical for CPS. Therefore, our results may shed light on the neural correlates of CPS.