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61.
Do Additional Features Help or Hurt Category Learning? The Curse of Dimensionality in Human Learners
The curse of dimensionality, which has been widely studied in statistics and machine learning, occurs when additional features cause the size of the feature space to grow so quickly that learning classification rules becomes increasingly difficult. How do people overcome the curse of dimensionality when acquiring real‐world categories that have many different features? Here we investigate the possibility that the structure of categories can help. We show that when categories follow a family resemblance structure, people are unaffected by the presence of additional features in learning. However, when categories are based on a single feature, they fall prey to the curse, and having additional irrelevant features hurts performance. We compare and contrast these results to three different computational models to show that a model with limited computational capacity best captures human performance across almost all of the conditions in both experiments. 相似文献
62.
Chi‐yue Chiu 《Asian Journal of Social Psychology》2007,10(1):41-44
The present article is inspired by the provocative ideas of Atsumi, Hofstede, Leung, and Ward expressed in this Special Issue on the past achievements, current status, and future opportunities and challenges of Asian social psychology as an international (vs a regional) endeavour. I believe that the success of Asian social psychology as a new voice and emerging perspective in social psychology hinges upon several factors: (i) adoption of an international (vs regional) outlook; (ii) not letting arbitrary geographical or intellectual boundaries restrict creative expansion of research ideas; and (iii) striving to craft a global identity with an Asian character by developing communicable theories that describe and explain important Asian social psychological phenomena for the benefits of Asia and beyond. 相似文献
63.
Jun Sung Hong Carl L. Algood Yu-Ling Chiu Stephanie Ai-Ping Lee 《Journal of child and family studies》2011,20(6):863-872
We review empirical studies on kinship foster care in the United States. We conceptualize kinship foster care within the context
of Urie Bronfenbrenner’s (1994) most recent ecological systems theory. Because there are multiple levels of influences on the developmental outcomes of
children placed in kinship foster home, understanding the interrelations between the individual (child) and his or her surrounding
environments (e.g., biological families, social-support network) is important. We argue that Bronfenbrenner’s most recent
ecological systems theory is an appropriate theoretical framework for policy and practice implications in addressing complex
issues surrounding kinship foster care system in the United States. This review integrates the empirical findings collectively
on the factors associated with kinship foster care within and between five systems levels of the ecological systems theory:
micro- (caregiver-child relationship, attachment, and kinship family environment), meso- (biological families), exo- (social-support network outside the family), macro- (race/ethnicity and policies), and chrono- (welfare reform) systems levels. Theories that are relevant to the ecological factors (e.g., attachment theory) are also
discussed. Finally, we draw policy and practice implications from the ecological systems analysis. 相似文献
64.
Jiang Jiang Yu Kou Fang Wang Ying Wu Yan‐Mei Li Yuan Li Yiyin Yang Hui Cao Qiuping Wu Shi‐Jie Jing Bi‐Jing Jiang La‐Mei Shen Ai‐Juan Li Zhongquan Li Wenjun Gao Chi‐Yue Chiu Ying‐Yi Hong Shih‐Chi Hsu Lin Zhang Bao‐Yan Yang Xiao‐Li Yang De‐Lei Zhao Zhimin Zou Qing‐Wang Wei Xia Chen Yu‐Fang Zhao Yi‐Jin Zhou Hong Chen Jianping Feng Xin Wang 《Asian Journal of Social Psychology》2011,14(3):207-216
A scandal can evoke public outrage when it is widely publicized and involves an individual who is perceived to have a high level of cultural representativeness. Two experiments showed that when the scandalous target's moral character was highlighted, emotional responses towards the target were least negative when the scandal was widely circulated and when the target was seen as a representative of his culture. These results suggest that when a cultural symbol is implicated in a widely‐circulated scandal, the negative emotions directed towards the scandalous individual can be alleviated when the public remains confident in his or her commitment to morality. 相似文献
65.
66.
Wai Fong Yik 《Quarterly journal of experimental psychology (2006)》1978,30(3):487-494
Four lists of Chinese words in a 2 × 2 factorial design of visual and acoustic similarity were used in a short-term memory experiment. In addition to a strong acoustic similarity effect, a highly significant visual similarity effect was also obtained. This was particularly pronounced in the absence of acoustic similarity in the words used. The results not only confirm acoustic encoding to be a basic process in short-term recall of verbal stimuli in a language other than English but also lend support to the growing evidence of visual encoding in short-term memory as the situation demands. 相似文献
67.
Power is one of the vital components embedded within interpersonal interactions, but few studies have studied it in everyday life context. This experience sampling study examined the associations of subjective power with emotional well-being and investigated the moderating effects of counterpart' postures in the associations. Our results demonstrated that individuals reported higher positive emotions and lower negative emotions when they perceived higher subjective power. Their positive emotions were positively correlated with counterparts' expansive postures while negative emotions were positively correlated with counterparts' constrictive postures. The subjective power-negative emotion associations were stronger when counterparts displayed higher level of constrictive posture. Our findings provide an evidence base for a comprehensive understanding on the role of subjective power and perception of counterparts' power-related posture in dyadic communications in emotional well-being. 相似文献
68.
Two experiments showed that American (vs. Chinese) culture priming influences Beijing Chinese undergraduates’ self-construal and its attendant memory strategies. Following American culture priming (vs. Chinese culture priming or control), the participants used relatively more independent self-statements and fewer interdependent self-statements to describe the self (Experiment 1). They also performed more poorly in a delayed recognition test if they had encoded the study materials (personality adjectives) with reference to the mother (Experiment 2). These results demonstrate the activation effect of culture on self-construal and its attendant memory processes. The results also show that biculturals can access different cultural conceptions of the self and change cognitive strategies flexibly in response to cues of changing cultural demands in the immediate context. 相似文献
69.
We propose a three-way interaction model based on substitutes for leadership theory to explore the relationship among ethical leadership, moral personality, and moral ideology (i.e., idealism and relativism) on two types of employee voluntary behaviors (i.e., organizational citizenship behavior and workplace deviant behavior). Results from a sample of 218 supervisor–subordinate dyads indicate that moral personality attenuates the relationship between ethical leadership and employee voluntary behaviors. Idealism serves as the boundary condition for the moderating effect of moral personality. However, relativism only serves as the boundary condition for the moderating effect of moral personality when predicting workplace deviant behavior. 相似文献
70.
The authors present a new approach to culture and cognition, which focuses on the dynamics through which specific pieces of cultural knowledge (implicit theories) become operative in guiding the construction of meaning from a stimulus. Whether a construct comes to the fore in a perceiver's mind depends on the extent to which the construct is highly accessible (because of recent exposure). In a series of cognitive priming experiments, the authors simulated the experience of bicultural individuals (people who have internalized two cultures) of switching between different cultural frames in response to culturally laden symbols. The authors discuss how this dynamic, constructivist approach illuminates (a) when cultural constructs are potent drivers of behavior and (b) how bicultural individuals may control the cognitive effects of culture. 相似文献