韦伯比的拟合公式

本文以神经生理学为基础,结合感官具有调节和比较两功能的实用性,建立起刺激在大脑皮层上引起感知效应Ｅ的数学模型：Ｅ＝Ｂｌｏｇ（１＋ｋＩ）,其中ｋ＝Ｉ￣（－ｂ）／ａ。从此出发,可推出中等以上刺激的差别阈判据：△ＥＭ＝恒量。将此判据推广到弱刺激,即得到差别阈的普适规律：△Ｉ／（Ｉ＋ａＩ￣ｂ）＝Ｎ,亦即韦伯定律的修订公式。从弱到强的广大刺激范围内,它都能与实验数据拟合良好。     

Freud's early metaphors and network of enterprise: Insight into a journey of scientific self-discovery

This paper examines Freud's evolving network of enterprise from 1876 to 1900 and the ensemble of metaphors which he used in the development of his theory (1888–1900). It will be shown that, in spite of Freud's obligatory change of career at age 26, there is no sharp break between Freud's early scientific work and his psychological research. Many signs of continuity between the two periods can be found. Freud's journey of scientific self-discovery only progressively led him to the frontiers of the unknown and his ultimate challenge: exploring the secrets of sexuality. Freud's avowed commitment to the study of the unconscious may have happened as late as 1899 as his metaphors celebrate an intimate fusion between the creator and his creation.     

Environmental and Psychological Factors that Influence the Creative Excellence of Brazilian and Portuguese Women

There is increasing recognition of the importance of creativity for social development. The purpose of this study was to investigate whether there were differences among Brazilian and Portuguese women recognized for their creative excellence in relation to the psychological and environmental factors that might impact their achievements. The sample was composed of 33 women; 18 who were socially recognized for excellence in creativity in different areas (nine Brazilian, nine Portuguese) were compared to 15 who were not recognized (nine Brazilian, six Portuguese). The instruments used were the Biographical Questionnaire of Creative Women, a semi‐structured interview guide, and the Creative Production Analysis Guide. Non‐parametric tests indicated significant differences in environmental factors and personal cognitive characteristics between the creative and non‐creative women when compared within each country. However, no significant differences among Brazilian and Portuguese creative women were found, thus indicating that they present similar psychological profiles.     

Using a Fork as a Hairbrush: Investigating Dual Routes to Release from Functional Fixedness

Functional fixedness involves difficulty with conceptualizing creative object uses. When it obstructs problem‐solving, individuals must reframe their approach. We examined how different training techniques—chunk decomposition (i.e., considering an object’s basic parts and physical properties) and constraint relaxation (i.e., considering an object’s different functions)—might rely upon different routes to creative reframing. Additionally, we investigated how different forms of cognitive load interact with these dual routes. Participants learned one of three techniques. Chunk decomposition participants created object breakdown diagrams; constraint relaxation participants created object functions lists; and free association (control) participants wrote a word that they associated with each of several concrete nouns. After training, participants attempted to solve five functional fixedness problems. E1 investigated how increasing germane cognitive load via either direct or indirect prompting affected training transfer. Experiment 2 investigated how reducing extraneous cognitive load by providing no transfer instructions and using an eye‐closure strategy. Across both experiments, results supported differences in accuracy and response latency by training. However, chunk decomposition and constraint relaxation did not follow the same pattern, suggesting different mechanisms of the effect. We discuss possible applications to increase innovation in real‐world domains such as education, business, and engineering.     

From Implicit Theories to Creative Achievements: The Mediating Role of Creativity Motivation in the Relationship between Stereotypes,Growth Mindset,and Creative Achievement

Research has demonstrated that implicit theories of creativity are crucial in shaping an individual’s behavior and real‐life decisions toward being creative. The present study proposed and examined the underlying mechanisms of how two kinds of implicit theories—the growth mindset of the creative self and the stereotype of creative others—are associated with creative achievements through the mediating role of creativity motivation. Participants were 606 undergraduate students who were enrolled in an education major in two universities in China. Overall, the study found that Chinese students held a positive image toward a creative student, regarding him or her as highly competent, warm, and popular. Student perceptions of a creative other were positively related to their growth mindset of creativity. Moreover, results verified both the mediating role of creativity motivation on growth mindset, as well as the effect of positive stereotyping of the creative other on students’ creative achievement. These findings point to promising creativity motivation strategies including the cultivation of a malleable view of creativity and of creative role models, that may, in turn, promote creative achievement by encouraging students to do, learn, and accomplish new things.     

Redefining the Meaning of Negative History in Times of Sociopolitical Change: A Social Creativity Approach

This article explores the role negative history plays in political discourse on crisis management and how times of sociopolitical change in turn influence the strategies that can be employed to write a positive historical charter. Choosing Germany as a case study, we analyzed how political leaders negotiate Germany's narrative and political role during the European “refugee crisis” in speeches (n = 332) held between 2015 and 2018. Applying a combination of corpus-based and qualitative narrative analysis, we found that the context of a crisis is used to attach new meaning to Germany's role in World War II. By focusing on the lessons learned from history and pointing out the parallels between the current crisis and sociopolitical developments that took place 80 years ago, Germany is presented as the ideal advocate for a free and united Europe, a narrative that legitimizes its advancingly dominant role within the EU and beyond. The analysis demonstrates how times of change can facilitate social creativity strategies for nations whose past is dominated by negative history, with implications for the theory of identity management.     

What could be My Next Job? Using Flat Information Structures to Generate Creative Future Career Ideas

In a dynamic labor market, it is important to help people combine information and generate creative solutions to cope with complex career challenges. In the present research, we apply the theory of information structure to creative career idea generation and hypothesize that flat information structures—that is, structures in which the information is disorganized—are more conducive to creativity than hierarchical information structures—that is, structures in which information is organized in higher‐order categories. In two experimental studies, participants had to combine career information related to self and work preferences that was presented either in flat or hierarchical structures. We found that flat information structures, compared with hierarchical information structures, led to future career ideas that were more creative on average. Our results suggest that cognitive flexibility explains the effect of information structure on the creativity of career ideas. Theoretical implications and suggestions for career management practices are discussed.     

Teachers’ Perceptions of Students’ Creativity in China’s Classrooms: The Role of Students’ Academic Achievement and Misbehaviors

Teachers can be biased, especially toward low achievers and students with behavioral issues. However, creative students often appear to be disruptive in the classroom, and many of them struggle academically. The purpose of the present study was to examine the extent to which teachers’ perceptions of students’ creativity is associated with students’ academic achievement and classroom (mis)behaviors, as well as to examine the interaction between these two factors. Three hundred and fifty‐four eighth‐grade students selected from five middle schools in China participated in this study. Using achievement scores, peer nominations, a divergent thinking test, a self‐rated ideational behavior scale, and teacher ratings, the present study found that, whereas creativity has no significant relationship with teachers’ perceptions, academic achievements and misbehavior are significantly associated within structors’ perceptions. The achievement bias resulted in the underestimation of low achievers’ creativity, even when the low achievers were highly creative. More nuances emerged when student misbehaviors were considered. Specifically, misbehaving low achievers’ originality was further underestimated even when they were highly original. In contrast, teachers overestimated well‐behaved high achievers’ creativity, even when the students comprised the lowest creativity group. The results are further discussed from a socio‐cultural perspective.     

创造力产生过程中的神经振荡机制

创造力究竟是怎么产生的, 目前尚未得出一致的结论。神经电生理技术因其高时间分辨率, 可以准确地揭示创造力产生进程中的神经振荡机制, 从而帮助人们更深刻地理解创造力的本质。近年来的研究发现, 单节律alpha神经振荡会随着创造力的增加而增强, 这反映了创造力产生过程中的内部信息加工需求增加、自上而下的抑制控制增强。同时, 多频段神经振荡交叉节律耦合体现了创造性产生过程中额叶、颞叶和顶叶等多脑区之间信息交流的动态变化。未来研究应该以整合理论框架为基础, 结合多层次多方法的研究工具, 引进更生态化的数理计算方法, 并利用计算神经科学建模来预测个体创造力发展趋势, 从而全面深刻地认识创造力的本质。