A visual display system for reading and visual perception research

The selection of a computer visual display system suitable for word recognition and reading research is described. The software character generation routines permit flexible definition of character sets. The display software permits control of size scaling and point density of characters being displayed as well as control over the temporal microstructure of presenting and refreshing the displayed text.     

Isolating visual units in the perception of words and nonwords

In three experiments, reaction times for same-different judgments were obtained for pairs of words, pronounceable nonwords (pseudowords), and unpronounceable nonwords. The stimulus strings were printed either in a single letter case or in one of several mixtures of upper- and lowercase letters. In Experiment 1, the stimuli were common one- and two-syllable words; in Experiment 2, the stimuli included both words and pseudowords; and in Experiment 3, words, pseudowords, and nonwords were used. The functional visual units for each string type were inferred from the effects that the number and placement of letter case transitions had onsame reaction time judgments. The evidence indicated a preference to encode strings in terms of multiletter perceptual units if they are present in the string. The data .also suggested that whole words can be used as functional visual units, although the extent of their use depends on contextual parameters such as knowledge that a word will be presented.     

Determinants of Children's Primary Health Care Use

We review factors that influence children's use of primary health care services. Predictors of pediatric health care use include child health status, child mental health, parent and family functioning, demographic characteristics, and access to health care services. Health services research is marked by inconsistencies due to varying approaches to measurement, population sampling, and analysis, and models that do not incorporate situational factors. We present recommendations for practicing clinicians and discuss suggestions for future research to help identify additional factors that may influence a parent's decision to seek help from pediatric physicians. Health care use is determined by multiple factors, and complex models will lead to improved strategies for maximizing health status and establishing optimal pediatric care.     

From empathy to action: Can enhancing host‐society children's empathy promote positive attitudes and prosocial behaviour toward refugees?

Over half of refugees are school‐aged children. In host communities, children's attitudes and behaviours are important for the integration of refugee children. This study examines the empathy–attitudes–action model in middle childhood (N = 94, 8 to 11 years old). In both the experimental and control conditions, children were introduced to a (fictional) refugee and told that he or she would be moving to their school. The experimental condition also listened to a storybook about the child's refugee experience. Empathy, outgroup attitudes, and prosocial behaviour toward the incoming child, and refugees as a group, were measured. Although mediation was not supported, the storybook condition reported more empathy and helping intentions, and attitudes predicted helping intentions but not giving to refugees. Results highlight how host‐society children can welcome refugees.     

Delayed auditory feedback and rhythmic tapping: evidence for a critical interval shift

Delayed auditory feedback (DAF) impairs performance in speech, music, and tapping, with maximal impairment in speech occurring at a delay of about 200 msec. This critical interval has played a central role in many explanations of the DAF effect, including both closed-loop feedback explanations and alternative proposals. We investigated the nature of the critical interval in rhythmic tapping--in particular, whether the critical interval has a constant value or is dependent on performance rate. Three experiments in which a synchronization-continuation paradigm was used consistently showed that the critical interval shifted with different tapping rates, with maximal impairment occurring when the delay approximately equaled the tapping rate. We address the implications of these results for theories of DAF.     

Is Democratic Toleration a Rubber Duck?

Democratic politicians face pressures unknown to the prerogative rulers of the early modern period when toleration was first formulated as a political ideal. These pressures are less often expressed as demands by groups or individuals for the permission of practices they dislike than for their restraint or outright prohibition; tolerant dispositions are less politically clamorous. The executive structure of toleration as a virtue, together with the ‘fact of reasonable pluralism’, make conflicts over toleration peculiarly intractable. Political conflicts are apt to take the form of mutual allegations ofintolerance; indeed, the problem of ‘tolerating the intolerant’, far from being a marginal case, is central to the theory and practice of toleration. Toleration thus exemplifies a category mistake committed in much contemporary political theory, particularly in its contractualist versions: the threshold of the political lies precisely where rational agreement proves impossible. The main prospects for democratic toleration are thus pre-emptive. The main way in which this can happen is by cultivating executive dispositions: in other words, encouraging people to detach themselves from strong evaluative commitments, so that toleration does not become politically contentious to start with. But this involves losses as well as gains. The gains in civil harmony and peace are obvious. The cost for tolerant political actors is alienation from what they have good reason to value. This revised version was published online in August 2006 with corrections to the Cover Date.     

The Semantic Theory of Truth: Field’s Incompleteness Objection

According to Field’s influential incompleteness objection, Tarski’s semantic theory of truth is unsatisfactory since the definition that forms its basis is incomplete in two distinct senses: (1) it is physicalistically inadequate, and for this reason, (2) it is conceptually deficient. In this paper, I defend the semantic theory of truth against the incompleteness objection by conceding (1) but rejecting (2). After arguing that Davidson and McDowell’s reply to the incompleteness objection fails to pass muster, I argue that, within the constraints of a non-reductive physicalism and a holism concerning the concepts of truth, reference and meaning, conceding Field’s physicalistic inadequacy conclusion while rejecting his conceptual deficiency conclusion is a promising reply to the incompleteness objection.

Generation and mnemonic encoding induce a mirror effect in the DRM paradigm

Encoding tasks that increase memory accuracy are appealing from both practical and theoretical perspectives. Within the Deese/Roediger-McDermott (DRM) paradigm, we found that generating list words from anagrams (relative to reading) produced a mirror effect: enhanced recognition of studied words coupled with a reduction in false recognition. Signal detection analyses suggest that the increase in correct recognition was due to enhanced item-specific encoding of the list words, whereas the reduction in false recognition was due to enhanced strategic monitoring at test (i.e., a distinctiveness heuristic), rather than to reduced relational encoding at study. Further support for a distinctiveness heuristic account was obtained using both "theme judgment" instructions and within-group conditions. In our final experiment, we replicated this mirror effect using a purely mnemonic (self-referential) encoding task, showing that extra perceptual cues are not necessary to induce participants to adopt a successful memory-improvement strategy at test.