Norris et al. argue against using evidence from phonetic decision making to support top-down feedback in lexical access on the grounds that phonetic decision relies on processes outside the normal access sequence. This leaves open the possibility that bottom-up connectionist models, with some contextual constraints built into the access process, are still preferred models of spoken-word recognition.

Working memory limits are best defined in terms of the complexity of the relations that can be processed in parallel. Complexity is defined as the number of related dimensions or sources of variation. A unary relation has one argument and one source of variation; its argument can be instantiated in only one way at a time. A binary relation has two arguments, two sources of variation, and two instantiations, and so on. Dimensionality is related to the number of chunks, because (...) both attributes on dimensions and chunks are independent units of information of arbitrary size. Studies of working memory limits suggest that there is a soft limit corresponding to the parallel processing of one quaternary relation. More complex concepts are processed by or In segmentation, tasks are broken into components that do not exceed processing capacity and can be processed serially. In conceptual chunking, representations are to reduce their dimensionality and hence their processing load, but at the cost of making some relational information inaccessible. Neural net models of relational representations show that relations with more arguments have a higher computational cost that coincides with experimental findings on higher processing loads in humans. Relational complexity is related to processing load in reasoning and sentence comprehension and can distinguish between the capacities of higher species. The complexity of relations processed by children increases with age. Implications for neural net models and theories of cognition and cognitive development are discussed. (shrink)

Overlaps in form and meaning between morphologically related words have led to ambiguities in interpreting priming effects in studies of lexical organization. In Semitic languages like Arabic, however, linguistic analysis proposes that one of the three component morphemes of a surface word is the CV-Skeleton, an abstract prosodic unit coding the phonological shape of the surface word and its primary syntactic function, which has no surface phonetic content (McCarthy, J. J. (1981). A prosodic theory of non-concatenative morphology, Linguistic Inquiry, 12 (...) 373-418). The other two morphemes are proposed to be the vocalic melody, which conveys additional syntactic information, and the root, which defines meaning. In three experiments using masked, cross-modal, and auditory-auditory priming we examined the role of the vocalic melody and the CV-Skeleton as potential morphemic units in the processing and representation of Arabic words. Prime/target pairs sharing the vocalic melody but not the CV-Skeleton consistently failed to prime. In contrast, word pairs sharing only the CV-Skeleton primed reliably throughout, with the amount of priming being as large as that observed between word pattern pairs sharing both vocalic melody and CV-Skeleton. Priming between morphologically related words can be observed when there is no overlap either in meaning or in surface phonetic form. (shrink)

The core issue of our target article concerns how relational complexity should be assessed. We propose that assessments must be based on actual cognitive processes used in performing each step of a task. Complexity comparisons are important for the orderly interpretation of research findings. The links between relational complexity theory and several other formulations, as well as its implications for neural functioning, connectionist models, the roles of knowledge, and individual and developmental differences, are considered.

_ Source: _Volume 5, Issue 2, pp 251 - 272 The old _Das Adam Smith Problem_ is no longer tenable. Few today believe that Smith postulates two contradictory principles of human action: one in the _Wealth of Nations_ and another in the _Theory of Moral Sentiments_. Nevertheless, an Adam Smith problem of sorts endures: there is still no widely agreed version of what it is that links these two texts, aside from their common author; no widely agreed version of how, (...) if at all, Smith's postulation of self-interest as the organising principle of economic activity fits in with his wider moral-ethical concerns. We argue that the enduring Adam Smith problem may be solved by recourse to a realist perspective that recognises the different levels of social reality to which Smith refers in his discourse. Essential to Smith, we try to show, is the action-theoretic distinction between motive and capacity; between a typology of empirical human acts, on the one hand—self-love and benevolence in Smiths terminology—and the condition of possibility of all human action—what Smith calls the sympathetic principle—on the other. (shrink)

Previously published: Tokyo: Kodansha International, 2010.

This paper discusses using the Chernobyl Incident as a case study in engineering ethics instruction. Groups of students are asked to take on the role of a faction involved in the Chernobyl disaster and to defend their decisions in a mock debate. The results of student surveys and the Engineering and Science Issues Test indicate that the approach is very popular with students and has a positive impact on moral reasoning. The approach incorporates technical, communication and teamwork skills and has (...) many of the features suggested by recent literature. (shrink)

Informed by this premise the book explores some of the key questions in criminal theory, addressing first the ethics of criminalisation and punishment.

In a rational system defences should interlock with the elements of the offence to ensure that conviction labels are differentiated according to the defendant’s degree of wrongdoing and culpability. The overall grading structure of criminal homicide, as represented in contemporary doctrine, goes some way to reflect this ethic. But the substance lacks precision and, in some key details, moral coherence. The recent Law Commission Consultation Paper, in a pragmatic and sensible attempt to rid the law and procedure of murder of (...) the malign influence of the mandatory sentence, has unnecessarily compromised such structural coherence as it currently enjoys and which could properly form a satisfactory basis for reform already precise and morally coherent. This is evident both in relation to the abandonment of the attack based template for the fault element in murder, and also in the unwillingness to view the partial defences as affecting the wrong in homicide as opposed to the grade. (shrink)

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain (...) in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

Selected writings from the most influential texts of the samurai era—in a pocket-size edition. The samurai of Japan, who were the country's military elite from medieval times to the end of the nineteenth century, were synonmous with valor, honor, and martial arts prowess. Their strict adherence to the code of bushido ("the way of the warrior"), chivalry, and honor in fighting to the death continues to capture the imagination of people today, inspiring authors, filmmakers, and artists. The Pocket Samurai contains (...) the essential writings of the era by the most esteemed samurai and philosophers of the age, including the iconic Miyamoto Musashi, author of The Book of Five Rings; Yamamoto Tsunetomo, author of Hagakure, the best-known explication of the samurai code; Takuan Soho, the Zen priest and adviser to samurai; Yagyu Munenori, whose The Life-Giving Sword describes a deeply spiritual approach to sword fighting; and others. (shrink)

Most words in English are ambiguous between different interpretations; words can mean different things in different contexts. We investigate the implications of different types of semantic ambiguity for connectionist models of word recognition. We present a model in which there is competition to activate distributed semantic representations. The model performs well on the task of retrieving the different meanings of ambiguous words, and is able to simulate data reported by Rodd, Gaskell, and Marslen‐Wilson [J. Mem. Lang. 46 (2002) 245] (...) on how semantic ambiguity affects lexical decision performance. In particular, the network shows a disadvantage forwords with multiple unrelated meanings (e.g., bark) that coexists with a benefit for words with multiple related word senses (e.g., twist). The ambiguity disadvantage arises because of interference between the different meanings, while the sense benefit arises because of differences in the structure of the attractor basins formed during learning. Words with few senses develop deep, narrow attractor basins, while words with many senses develop shallow, broad basins. We conclude that the mental representations of word meanings can be modelled as stable states within a high‐dimensional semantic space, and that variations in the meanings of words shape the landscape of this space. (shrink)

A number of recent studies have examined the effects of phonological variation on the perception of speech. These studies show that both the lexical representations of words and the mechanisms of lexical access are organized so that natural, systematic variation is tolerated by the perceptual system, while a general intolerance of random deviation is maintained. Lexical abstraction distinguishes between phonetic features that form the invariant core of a word and those that are susceptible to variation. Phonological inference relies on the (...) context of surface changes to retrieve the underlying phonological form. In this article we present a model of these processes in speech perception, based on connectionist learning techniques. A simple recurrent network was trained on the mapping from the variant surface form of speech to the underlying form. Once trained, the network exhibited features of both abstraction and inference in its processing of normal speech, and predicted that similar behavior will be found in the perception of nonsense words. This prediction was confirmed in subsequent research (Gaskell & Marslen-Wilson, 1994). (shrink)

Cowan's review shows that a short-term memory limit of four items is consistent with a wide range of phenomena in the field. However, he does not explain that limit, whereas an existing theory does offer an explanation for capacity limitations. Furthermore, processing capacity limits cannot be reduced to storage limits as Cowan claims.