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51.
Accumulated recent research suggests that prior knowledge of multiple languages leads to advantages in learning additional languages. In the current article, we review studies examining potential differences between monolingual and multilingual speakers in novel language learning in an effort to uncover the cognitive mechanisms that underlie such differences. We examine the multilingual advantage in children and adults, across a wide array of languages and learner populations. The majority of this literature focused on vocabulary learning, but studies that address phonology, grammar, and literacy learning are also discussed to provide a comprehensive picture of the way in which multilingualism affects novel language learning. Our synthesis indicates two avenues to the multilingual advantage including direct transfer of prior knowledge and prior skills as well as indirect influences that result from multilingual background and include more general changes to the cognitive-linguistic system. Finally, we highlight topics that are in need of future systematic research. 相似文献
52.
Instrumental learning and cognitive flexibility processes are impaired in children exposed to early life stress 下载免费PDF全文
Madeline B. Harms Katherine E. Shannon Bowen Jamie L. Hanson Seth D. Pollak 《Developmental science》2018,21(4)
Children who experience severe early life stress show persistent deficits in many aspects of cognitive and social adaptation. Early stress might be associated with these broad changes in functioning because it impairs general learning mechanisms. To explore this possibility, we examined whether individuals who experienced abusive caregiving in childhood had difficulties with instrumental learning and/or cognitive flexibility as adolescents. Fifty‐three 14–17‐year‐old adolescents (31 exposed to high levels of childhood stress, 22 control) completed an fMRI task that required them to first learn associations in the environment and then update those pairings. Adolescents with histories of early life stress eventually learned to pair stimuli with both positive and negative outcomes, but did so more slowly than their peers. Furthermore, these stress‐exposed adolescents showed markedly impaired cognitive flexibility; they were less able than their peers to update those pairings when the contingencies changed. These learning problems were reflected in abnormal activity in learning‐ and attention‐related brain circuitry. Both altered patterns of learning and neural activation were associated with the severity of lifetime stress that the adolescents had experienced. Taken together, the results of this experiment suggest that basic learning processes are impaired in adolescents exposed to early life stress. These general learning mechanisms may help explain the emergence of social problems observed in these individuals. 相似文献
53.
Tamar Schapiro 《The Journal of Ethics》2011,15(3):147-167
In this paper I defend Kant’s Incorporation Thesis, which holds that we must “incorporate” our incentives into our maxims
if we are to act on them. I see this as a thesis about what is necessary for a human being to make the transition from ‘having
a desire’ to ‘acting on it’. As such, I consider the widely held view that ‘having a desire’ involves being focused on the
world, and not on ourselves or on the desire. I try to show how this view is connected with a denial of any deep distinction
between reason and inclination. I then argue for an alternative view of what ‘having a desire’ involves, one according to
which it involves being focused both on the world and on ourselves. I show how this view fits naturally with the Kantian distinction
between reason and inclination, accounts for independent intuitions about ‘having a desire’, and supports the Incorporation
Thesis. I then make some further suggestions about how we might conceive of the object of incorporation. 相似文献
54.
The aim of this study was to pinpoint the nature of the visual features used in the automatic mapping of perceived movements into similar executed movements, following the direct matching hypothesis. In Experiment 1 subjects imitated the lifting of one of two fingers, presented with different orientations. As predicted, stimuli which were further rotated away from the posture of the executing hand elicited slower reaction times. In Experiment 2, we verified that this orientation effect was not a purely perceptual effect by presenting the same stimuli but asking subjects to respond verbally. No orientation effect was found using a verbal response. In Experiment 3, we replaced the moving fingers by two arbitrary objects moving with the trajectories of the finger tips of Experiment 1. The same orientation effect as in Experiment 1 was observed. We conclude that in this experiment participants are using purely kinematic features to map perceived into executed movements. 相似文献
55.
Elizabeth Brondolo Kim P. Kelly Vonetta Coakley Tamar Gordon Shola Thompson Erika Levy Andrea Cassells Jonathan N. Tobin Monica Sweeney Richard J. Contrada 《Journal of applied social psychology》2005,35(2):335-365
This paper describes 2 studies that evaluated a new instrument, the Perceived Ethnic Discrimination Questionnaire‐Community Version (PEDQ‐CV). The PEDQ‐CV can be used across ethnic groups to assess perceived racism or ethnic discrimination. The scales measure several subdimensions of racism, permitting the examination of different forms of this race‐related stressor. The first study evaluated the psychometric properties of the PEDQ‐CV in a large sample of community‐dwelling adults. The second evaluated psychometric properties of a brief version of the PEDQ‐CV, developed for research protocols requiring a shorter administration time. Tests were made of reliability and several forms of construct validity. Both versions of the PEDQ‐CV have good reliability and construct validity. The PEDQ‐CV can facilitate the development of an integrative body of knowledge across different ethnic groups regarding the existence, determinants, and consequences of discrimination. 相似文献
56.
The authors outline a cognitive and computational account of causal learning in children. They propose that children use specialized cognitive systems that allow them to recover an accurate "causal map" of the world: an abstract, coherent, learned representation of the causal relations among events. This kind of knowledge can be perspicuously understood in terms of the formalism of directed graphical causal models, or Bayes nets. Children's causal learning and inference may involve computations similar to those for learning causal Bayes nets and for predicting with them. Experimental results suggest that 2- to 4-year-old children construct new causal maps and that their learning is consistent with the Bayes net formalism. 相似文献
57.
Frost R Kugler T Deutsch A Forster KI 《Journal of experimental psychology. Learning, memory, and cognition》2005,31(6):1293-1326
Most models of visual word recognition in alphabetic orthographies assume that words are lexically organized according to orthographic similarity. Support for this is provided by form-priming experiments that demonstrate robust facilitation when primes and targets share similar sequences of letters. The authors examined form-orthographic priming effects in Hebrew, Arabic, and English. Hebrew and Arabic have an alphabetic writing system but a Semitic morphological structure. Hebrew morphemic units are composed of noncontiguous phonemic (and letter) sequences in a given word. Results demonstrate that form-priming effects in Hebrew or Arabic are unreliable, whereas morphological priming effects with minimal letter overlap are robust. Hebrew bilingual subjects, by contrast, showed robust form-priming effects with English material, suggesting that Semitic words are lexically organized by morphological rather than orthographic principles. The authors conclude that morphology can constrain lexical organization even in alphabetic orthographies and that visual processing of words is first determined by morphological characteristics. 相似文献
58.
Jerrold Pollak Sheldon Levy Timothy Breitholtz 《Journal of counseling and development : JCD》1999,77(3):350-358
This article reviews several assessment factors useful identifying the presence of a possible medical illness or neurodevelopmental disorder contributing to a client's adjustment problems. Use of behavioral observations, record reviews, brief neuro-behavioral screening tests, and the taking of a history are outlined that can assist in raising the index of suspicion for organic influence. Also addressed are issues pertaining to referral for medical and specialty assessments, including neuropsychological evaluation. 相似文献
59.
Token status effects, also called distinctiveness, include feelings of racial/gender awareness, representativeness, and accountability. In this multimethod three-part research, it is argued that Black students in a predominantly White university feel chronically distinctive, whereas White students may feel acutely distinctive when they are in the numerical minority. However, this acute distinctiveness is situation specific. First a pilot study confirmed that Black and White females differ in their reports of distinctiveness. Study 1 showed that Black students feel chronically distinctive and that they are often “solos” in classrooms. Study 2 tried to separate race and solo status effects on distinctiveness by experimentally manipulating group solo status. Results indicate a main effect for solo status and also a main effect for race on feelings of distinctiveness across solo conditions. Applications of this research for the token literature and for distinctiveness theory are discussed. 相似文献
60.