| 其他摘要 | Research on the process of creative ideation shows that there is a robust serial order effect, that is, as time goes by, the fluency decreases, while the originality increases. Different theories have different views on the explanation of this effect. Further clarification of this effect will be helpful for explaining how individuals generate creative ideas. This dissertation explored the process of creative ideation in different age groups and its relationship with inhibition, so as to further clarified the mechanism of creative ideation process.
In Study 1, children, adolescents and adults were asked to complete the creative idea generation task and were investigated by using behavioral and EEG techniques. The results of Experiment 1 showed that as time went by, the fluency of children, adolescents and adults decreased and the originality increased. Among them, the originality of adolescents increased most, followed by adults and children. In Experiment 2, we found that alpha synchronization in the frontal and posterior brain regions played an important role in the serial order effect of creative ideation, but there were differences in brain activity patterns among different age groups. In the children, the brain alpha synchronization in the early stage of creative ideation was significantly lower than that in the middle stage, while the brain alpha synchronization in the late stage was significantly lower than that in the early and middle stages. In the adolescent group and the adult group, the brain alpha synchronization activity in the early stage of creative ideation was significantly lower than that in the middle and late stages of creative ideation. In addition, the study found that in the middle and late stages of creative ideation, there were different degrees of lateralization differences in the left hemisphere among children, adolescents and adults, that is, the alpha synchronization activity in the left hemisphere was significantly stronger than that in the right hemisphere. In addition, the left hemisphere lateralization was most obvious in adolescents. Moreover, the results also showed that the relationship between the alpha synchronous activities in frontal and posterior brain regions and the originality of ideas is different among different age groups. In children and adolescents, the synchronous activities of frontal and posterior brain regions are negatively correlated with the originality of ideas, while in adults, the synchronous activities of frontal and posterior brain regions are positively correlated with the originality.
In Study 2, behavioral and EEG studies were conducted on the relationship between inhibition and creative ideation in children, adolescents and adults. The results of Experiment 3 showed that in children and adults, the originality of subjects with low inhibition ability was significantly lower than that of subjects with high inhibition ability in the middle stage of creative ideation, and no such difference was found in adolescents. The results of Experiment 4 showed that different age groups with different inhibition ability had different brain activity patterns. In the early and middle stages, the alpha synchronization activity of low-inhibition ability subjects was significantly higher than that of high-inhibition ability subjects, while in the late stage, the alpha synchronization activity of low-inhibition ability subjects was significantly lower than that of high-inhibition ability subjects. In the middle and late stages of creative ideation of adult groups, the brain alpha synchronization activity of low-inhibition ability subjects was significantly lower than that of high-inhibition ability subjects.
To sum up, this study obtains the empirical evidences of the development characteristics of creative ideation, providing empirical evidences for the dual-process model of creativity. In addition, it is also the first time to investigate the role of inhibition in the process of creative ideation from the perspective of development, which not only helps us better understand the cognitive process of how individuals generating creative ideas, but also provides theoretical and empirical support for improving individual creativity from the perspective of inhibition training in the future. |
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