Intensional Completeness in an Extension of Gödel/Dummett Logic

We enrich intuitionistic logic with a lax modal operator and define a corresponding intensional enrichment of Kripke models M = (W, , V) by a function T giving an effort measure T(w, u) {} for each -related pair (w, u). We show that embodies the abstraction involved in passing from true up to bounded effort to true outright. We then introduce a refined notion of intensional validity M |= p : and present a corresponding intensional calculus iLC-h which gives a natural extension by lax modality of the well-known G: odel/Dummett logic LC of (finite) linear Kripke models. Our main results are that for finite linear intensional models L the intensional theory iTh(L) = {p : | L |= p : } characterises L and that iLC-h generates complete information about iTh(L).Our paper thus shows that the quantitative intensional information contained in the effort measure T can be abstracted away by the use of and completely recovered by a suitable semantic interpretation of proofs.     

Reducing postural sway by concurrently performing challenging cognitive tasks

The present experiment varied cognitive complexity and sensory modality on postural control in young adults. Seventeen participants (23.71 ± 1.99 years) were instructed to stand feet together on a force platform while concurrently performing cognitive tasks of varying degrees of difficulty (easy, moderate and difficult). The cognitive tasks were presented both, auditorily and visually. Auditory tasks consisted of counting the occurrence of one or two letters and repeating a string of words. Visual tasks consisted of counting the occurrence of one or two numbers. With increasing cognitive demand, area of 95% confidence ellipse and ML sway variability was significantly reduced. The visual tasks reduced ML sway variability, whereas the auditory tasks increased COP irregularity. We suggest that these findings are primarily due to an increase in sensorimotor integration as a result of a shift in attentional focus.     

Crossmodal change blindness between vision and touch

Change blindness is the name given to people's inability to detect changes introduced between two consecutively-presented scenes when they are separated by a distractor that masks the transients that are typically associated with change. Change blindness has been reported within vision, audition, and touch, but has never before been investigated when successive patterns are presented to different sensory modalities. In the study reported here, we investigated change detection performance when the two to-be-compared stimulus patterns were presented in the same sensory modality (i.e., both visual or both tactile) and when one stimulus pattern was tactile while the other was presented visually or vice versa. The two to-be-compared patterns were presented consecutively, separated by an empty interval, or else separated by a masked interval. In the latter case, the masked interval could either be tactile or visual. The first experiment investigated visual-tactile and tactile-visual change detection performance. The results showed that in the absence of masking, participants detected changes in position accurately, despite the fact that the two to-be-compared displays were presented in different sensory modalities. Furthermore, when a mask was presented between the two to-be-compared displays, crossmodal change blindness was elicited no matter whether the mask was visual or tactile. The results of two further experiments showed that performance was better overall in the unimodal (visual or tactile) conditions than in the crossmodal conditions. These results suggest that certain of the processes underlying change blindness are multisensory in nature. We discuss these findings in relation to recent claims regarding the crossmodal nature of spatial attention.     

轻度智障学生心理健康教育干预的形式与方法

轻度智障学生具有学习焦虑、孤独感、好责备自己、缺乏主动性和积极性等心理健康方面的问题。产生这些问题的原因有个体因素、父母教养因素和学校教育因素等。针对这些问题,教育者使用多种辅导形式和方法进行干预,使轻度智障学生的心理健康水平得以提高与改善。本文最后提出了在进行教育干预时需注意的一些问题,为学校开展该方面工作提供参考。     

RELIGION AND THE MODE OF PRACTICE IN MICHAEL OAKESHOTT

Michael Oakeshott's religious view of the world stands behind much of his political and philosophical writing. In this essay I first discuss Oakeshott's view of religion and the mode of practice in his own terms. I attempt next to illuminate his idea of religion by describing it in less technical language, drawing upon other thinkers such as Georg Simmel and George Santayana, who share similar views. I then evaluate Oakeshott's view as a whole, considering whether his ideas about religion can stand up to careful scrutiny and whether they have value for present-day reflection on religion.     

短时记忆中的范畴组织和通道组织的比较

本文通过设置不同的线索条件对短时记忆中范畴组织和通道组织进行了比较研究。实验采用了通道线索组、范围线索组和混合线索组三种条件,并设置了五种词表比例。在通道线索组中,每个词表是同范畴字词,但一半用视觉呈现,一半用听觉呈现;在范畴线索组中,两类词分属两个不同的词义范畴,但以相同通道呈现;在混合线索组中,两类不同范畴的词,各有一半分别用视觉和听觉呈现。结果表明在三种线索条件下,ＡＲＣ分值差异显著,表现为     

Rethinking Sellars’ Myth of the Given: From the Epistemological to the Modal Relevance of Givenness in Kant and Hegel

ABSTRACT

Here, I pursue consequences, for the interpretation of Sellars’ critique of the ‘Myth of the Given’, of separating the modal significance that Kant attributed to empirical intuition from the epistemological role it also played for him. It is argued that Kant’s approach to modality in the Critique of Pure Reason can best be understood as a transcendental variation on Leibniz’s earlier ‘possibilist’ approach that treated the actual world as just one of a variety of possible alternative worlds. In this context, empirical intuitions seem to work like the mythical Givens subject to Sellars’ critique. This Kantian possibilism is then contrasted with an ‘actualist’ alternative approach to modality found in the contemporary work of Robert Stalnaker, but also recognizable in Hegel. In particular, the role of immediate perceptual judgments in Hegel is likened to that played by ‘witness statements’ in Robert Stalnaker’s attempt to distinguish the logic of judgments about the actual world from those about its alternate possibilities.     

Context effects in auditory implicit memory

The context effect in implicit memory is the finding that presentation of words in meaningful context reduces or eliminates repetition priming compared to words presented in isolation. Virtually all of the research on the context effect has been conducted in the visual modality but preliminary results raise the question of whether context effects are less likely in auditory priming. Context effects in the auditory modality were systematically examined in five experiments using the auditory implicit tests of word-fragment and word-stem completion. The first three experiments revealed the classical context effect in auditory priming: Words heard in isolation produced substantial priming, whereas there was little priming for the words heard in meaningful passages. Experiments 4 and 5 revealed that a meaningful context is not required for the context effect to be obtained: Words presented in an unrelated audio stream produced less priming than words presented individually and no more priming than words presented in meaningful passages. Although context effects are often explained in terms of the transfer-appropriate processing (TAP) framework, the present results are better explained by Masson and MacLeod's (2000) reduced-individuation hypothesis.     

Effects of retrieval practice and presentation modality on verbal learning: testing the limits of the testing effect

ABSTRACT

The testing effect refers to improved memory after retrieval practice and has been researched primarily with visual stimuli. In two experiments, we investigated whether the testing effect can be replicated when the to-be-learned information is presented auditorily, or visually?+?auditorily. Participants learned Swahili-English word pairs in one of three presentation modalities – visual, auditory, or visual?+?auditory. This was manipulated between-participants in Experiment 1 and within-participants in Experiment2. All participants studied the word pairs during three study trials. Half of participants practiced recalling the English translations in response to the Swahili cue word twice before the final test whereas the other half simply studied the word pairs twice more. Results indicated an improvement in final test performance in the repeated test condition, but only in the visual presentation modality (Experiments 1 and 2) and in the visual?+?auditory presentation modality (Experiment 2). This suggests that the benefits of practiced retrieval may be limited to information presented in a visual modality.     

Peer Relationships and Emotional Well-Being of Children with Sickle Cell Disease: A Controlled Replication

This study investigated the effects of stimulus presentation modality on working memory performance in elementary school-age children ages 7–13. The experimental paradigm implemented a multitrial learning task incorporating three presentation modalities: Auditory, Visual, and simultaneous Auditory plus Visual. The first experiment compared the learning and memory performance of older and younger elementary school children. The second experiment compared verbal learning and memory performance in elementary school children with major depressive disorder (MDD) to the performance of nondepressed children. All participants benefited from the pictorial presentation of information during learning and recall of information as compared to the auditory presentation alone. Both age and socioeconomic status affected working memory performance in typically developing children. Children with depression demonstrated a more passive learning style during the auditory list acquisition. The present study supports the pictorial superiority hypothesis in verbal learning tasks and the theory that working memory matures during elementary school years. Furthermore, current results indicate that complex working memory measures are not entirely independent of previous experience.