Cutting the Gordian Knot of Demarcation

A definition of pseudoscience is proposed, according to which a statement is pseudoscientific if and only if it (1) pertains to an issue within the domains of science, (2) is not epistemically warranted, and (3) is part of a doctrine whose major proponents try to create the impression that it is epistemically warranted. This approach has the advantage of separating the definition of pseudoscience from the justification of the claim that science represents the most epistemically warranted statements. The definition is used to explain why proponents of widely divergent criteria for the demarcation between science and pseudoscience tend to be in almost complete agreement on the particular demarcations that should presumably be based on these general criteria.     

A Survey of non-Prioritized Belief Revision

This paper summarizes and systematizes recent and ongoing work on non-prioritized belief change, i.e., belief revision in which the new information has no special priority due to its novelty.     

In defense of base contraction

In the most common approaches to belief dynamics, states of belief are represented by sets that are closed under logical consequence. In an alternative approach, they are represented by non-closed belief bases. This representation has attractive properties not shared by closed representations. Most importantly, it can account for repeated belief changes that have not yet been satisfactorily accounted for in the closed approach.     

Fired managers: Experiences from their own unemployment

This paper purports to enhance the understanding of stress and its effects on unemployed executives. The idea that unemployed managers perceive and confront stress differently from their employed colleagues is addressed. A sampling of 32 unemployed executives and managers was taken using The Stress Profile, to survey reasons for stress, coping ability, and response to stress. The profiled samples were then compared to a comparison group of 367 employed managers. The results showed that unemployed managers, when compared to their employed associates, tended to have less desireable family situations, more worries about finances, decreased perception of self and self-coherence, decreased coping ability, and heightened emotional and behavioral reaction to stress. The conclusion was that when dealing with stressors, unemployed managers experienced a decreased sense of psychological well-being and coping abilities as compared to employed managers.     

Decision theoretic foundations for axioms of rational preference

Rationality postulates for preferences are developed from two basic decision theoretic principles, namely: (1) the logic of preference is determined by paradigmatic cases in which preferences are choice-guiding, and (2) excessive comparison costs should be avoided. It is shown how the logical requirements on preferences depend on the structure of comparison costs. The preference postulates necessary for choice guidance in a single decision problem are much weaker than completeness and transitivity. Stronger postulates, such as completeness and transitivity, can be derived under the further assumption that the original preference relation should also be capable of guiding choice after any restriction of the original set of alternatives.     

The use of time during lexical processing and segmentation: A review

Speech, by its very nature, is a time-based phenomenon. Speech sounds are temporally distributed, with the presentation of one sound roughly conditioned by the fading of the previous one. In this review, three classes of models are discussed with respect to the sequential nature of speech. It is argued that the three resulting conceptions of time are linked to the type of segmentation process proposed by these models to deal with speech continuity. In the first one, lexical activation is viewed as perfectly synchronized with the temporal deployment of speech. This type of model corresponds to the traditional left-to-right (proactive) account of lexical processing. Because serious segmentation problems exist for such an approach (e.g.,car andcard are embedded incardinal), the second type of model treats word recognition as the result of a mechanism that sometimes delays commitment on word identity beyond word offset. Lexical activation, instead of shadowing the unfolding of time, lags behind it until an unambiguous decision can be made. The temporarily unprocessed information is stored in a memory buffer. In the third approach, a prosodic cue (lexical stress) contributes actively to speech segmentation and lexical processing. Every stressed syllable encountered in the signal is postulated as a word onset and thus constitutes the starting point of lexical activation. However, with non-initial-stressed words, retroactive procedures going “back in time” must be used. Finally, the use of time (including proactive, delayed, and retroactive procedures) is discussed in light of cross-linguistic phonological differences.     

Color preference,arousal, and the theory of psychological reversals

The theory of psychological reversals asserts that there are two levels of preferred felt arousal, one high and one low. Only one of them is preferred at a given time, although discrete switches (reversals) occur from time to time, so that each level is preferred at different times. In order to document such changes in preferred levels of arousal, 75 subjects were asked to make color preference choices at regular intervals during their working day, some for as many as 8 days. The assumption was that different colors are arousing or relaxing, and that color choice indicates arousal preference. The typical patterns of color choices that occurred clearly displayed the expected reversal effect over time and were considerably more consistent with reversal theory than with optimal arousal theory. In a second study, 41 new subjects were asked to respond to a simple mood adjective checklist each time they made their color preference choices. The results strongly supported the association between arousal preference and color preference and also supported the reversal theory thesis that low arousal preference is associated with seriousness and planning orientation (all these characterizing the telic state), and that high arousal preference is associated with playfulness and spontaneity (all these characterizing the paratelic state). Finally, both studies showed that there is a systematic tendency for long-wavelength colors to induce feelings of high arousal and for short-wavelength colors to induce feelings of low arousal.     

ATTEMPTS AT MUSCLE CONTROL WITH VISUAL AND AUDITORY IMPULSES AS AUXILIARY STIMULI

The report covers two EMG-experiments designed to show that the results of motor learning based principally on proprioceptive stimulation are less favorable than the corresponding results when visual and/or auditive auxiliary stimulation operate together with proprioception, even when the motor task is as delicate as the one appearing in the main experiment, i.e. single motor unit activity. The second experiment gives grounds for a conclusion that these results seem to hold for more normal working criteria, too.     

The Role of Leisure Interest and Engagement for Subjective Well-Being

During the last decades, the association between leisure engagement and subjective well-being (SWB) has been examined. Yet, the role of the interest in specific leisure activities for SWB has been neglected. Thus, we examined whether the pure leisure engagement or the opportunity to realize the longing to pursue a leisure activity is linked to well-being. A sample of 402 participants completed an online survey about interests and the frequency of engagement in diverse leisure activities as well as physical, cognitive, and affective well-being. The study revealed that leisure engagement showed stronger associations with all aspects of well-being than leisure interest per se. More specifically, interest and engagement in social activities and sports showed robust associations with different facets of well-being. Furthermore, a high individual fit between leisure interest and engagement across diverse activities incrementally predicted SWB beyond leisure engagement per se. Analyses of nonlinear associations indicated that too much leisure engagement was associated with lower levels of SWB, but high interest in leisure activities buffered this effect. Thus, the intrinsic motivation to leisure activities may play an important role for well-being in addition to the sheer leisure engagement.     

Sound specificity effects in spoken word recognition: The effect of integrality between words and sounds

Recent evidence has shown that nonlinguistic sounds co-occurring with spoken words may be retained in memory and affect later retrieval of the words. This sound-specificity effect shares many characteristics with the classic voice-specificity effect. In this study, we argue that the sound-specificity effect is conditional upon the context in which the word and sound coexist. Specifically, we argue that, besides co-occurrence, integrality between words and sounds is a crucial factor in the emergence of the effect. In two recognition-memory experiments, we compared the emergence of voice and sound specificity effects. In Experiment 1 , we examined two conditions where integrality is high. Namely, the classic voice-specificity effect (Exp. 1a) was compared with a condition in which the intensity envelope of a background sound was modulated along the intensity envelope of the accompanying spoken word (Exp. 1b). Results revealed a robust voice-specificity effect and, critically, a comparable sound-specificity effect: A change in the paired sound from exposure to test led to a decrease in word-recognition performance. In the second experiment, we sought to disentangle the contribution of integrality from a mere co-occurrence context effect by removing the intensity modulation. The absence of integrality led to the disappearance of the sound-specificity effect. Taken together, the results suggest that the assimilation of background sounds into memory cannot be reduced to a simple context effect. Rather, it is conditioned by the extent to which words and sounds are perceived as integral as opposed to distinct auditory objects.