Investigating reasoning in maternity-care scheduling

How do expert schedulers reason? One view states that experts generally reason by applying rules; another, that their reasoning is mainly based on cases. This paper constitutes the first results of an ongoing project designed to analyze the acquisition and representation of the knowledge of expert and novice schedulers in the context of these two views. It is concluded that the reasoning of the analyzed maternity-care scheduling experts can best be described as based on rules, and that the reasoning of novices in maternity-care scheduling is primarily case based.     

Immunizing Strategies and Epistemic Defense Mechanisms

An immunizing strategy is an argument brought forward in support of a belief system, though independent from that belief system, which makes it more or less invulnerable to rational argumentation and/or empirical evidence. By contrast, an epistemic defense mechanism is defined as a structural feature of a belief system which has the same effect of deflecting arguments and evidence. We discuss the remarkable recurrence of certain patterns of immunizing strategies and defense mechanisms in pseudoscience and other belief systems. Five different types will be distinguished and analyzed, with examples drawn from widely different domains. The difference between immunizing strategies and defense mechanisms is analyzed, and their epistemological status is discussed. Our classification sheds new light on the various ways in which belief systems may achieve invulnerability against empirical evidence and rational criticism, and we propose our analysis as part of an explanation of these belief systems’ enduring appeal and tenacity.     

Demographic,health-related and psychosocial predictors of changes in depressive symptoms and anxiety in late middle-aged and older persons with fall-related injuries

Research on anxiety and depression after fall-related injuries to the extremities and its pre-fall determinants is scarce. The present study sought to examine change between pre-fall and post-fall anxiety and depression and its (pre-fall) predictors. Data were obtained from 181 Dutch persons, aged 57 and older, who sustained fall-related injuries between 1993 and 1997. Demographic (e.g. socio-economic status), health-related (e.g. number of chronic conditions), and psychosocial (e.g. social support, neuroticism) factors were determined in 1993 (prior to the fall). Depressive symptoms and anxiety were determined prior to the fall, and two, five and twelve months after the fall. Taking into account pre-fall anxiety and depression, pre-fall neuroticism was the most consistent, independent predictor of adverse changes in anxiety and depression. Other factors, including severity of the fall and age were not related to changes in anxiety and depression. Our prospective findings may be interpreted as support for the importance of personality for mental health outcomes in persons who have sustained fall-related injuries.     

Perspectives on the future of ecumenism: the 50th anniversary of Unitatis Redintegratio

Unitatis Redintegratio, the decree on the participation of the Catholic Church in the ecumenical movement, was promulgated by Pope Paul VI on Saturday 21 November 1964, now just over 50 years ago. This article reminds us of the events leading up to that day, which shaped the text and which must be understood, if we are to arrive at a proper evaluation of the decree and its consequences.     

Reply to Steele & Ferrer: Modeling Oscillation,Approximately or Exactly?

This article addresses modeling oscillation in continuous time. It criticizes Steele and Ferrer's article “Latent Differential Equation Modeling of Self-Regulatory and Coregulatory Affective Processes” (2011), particularly the approximate estimation procedure applied. This procedure is the latent version of the local linear approximation procedure based on Boker (2001) Boker, S. M. 2001. “Differential structural equation modeling of intraindividual variability.”. In New methods for the analysis of change Edited by: Collins, L. and Sayer, A. 3–28. Washington, DC: American Psychological Association.. [Crossref] , [Google Scholar] and Boker, Neale, and Rausch (2004). It furthermore presents two exact alternative estimation procedures, one using filter techniques and the other using structural equation modeling.     

Actual and non-actual motion: why experientialist semantics needs phenomenology (and vice versa)

Experientialist semantics has contributed to a broader notion of linguistic meaning by emphasizing notions such as construal, perspective, metaphor, and embodiment, but has suffered from an individualist concept of meaning and has conflated experiential motivations with conventional semantics. We argue that these problems can be redressed by methods and concepts from phenomenology, on the basis of a case study of sentences of non-actual motion such as “The mountain range goes all the way from Mexico to Canada.” Through a phenomenological reanalysis of proposals of Talmy, Langacker, and Matlock, we show that non-actual motion is both experientially and linguistically non-unitary. At least three different features of human consciousness—enactive perception, visual scanning, and imagination—constitute experiential motivations for non-actual motion sentences, and each of these could be related to phenomenological analyses of human intentionality. The second problem is addressed by proposing that the experiential motivations of non-actual motion sentences can be viewed as sedimented through “passive” processes of acquisition and social transmission and that this implies an interactive loop between experience and language, yielding losses in terms of original experience, but gains in terms of communal signification. Something that is underestimated by phenomenology is that what is sedimented are not only intentional objects such as states of affairs, but aspects of how they are given, i.e., the original, temporal, bodily experiences themselves. Since cognitive semantics has emphasized such aspects of meaning, we suggest that phenomenology can itself benefit from experientialist semantics, especially when it turns its focus from prepredicative to predicative, linguistic intentionality.     

Opposing effects of phonological similarity on item and order memory of words and nonwords in the serial recall task

This study shows that the classical phonological similarity effect (PSE) in immediate serial recall is critically affected by the lexicality of list items, the type of phonological similarity involved, and the scoring procedure. PSE was present in the serial recall score when phonologically distinct words were compared to words that share the middle vowel and end consonant (rhyming lists). PSE was absent in the serial recall score when phonologically distinct words were compared to words that share the initial and final consonants (consonant frame lists). There was a reversal of PSE in serial recall of nonwords when comparing distinct lists to both types of similar lists. Recall accuracy on the other hand was higher for distinct lists regardless of lexicality. Item errors dominated in relation to order errors in the case of nonwords, whereas order errors dominated in relation to item errors in the case of words. Furthermore, order errors were more common for phonologically similar lists, whereas item errors were more common for phonologically distinct lists. This may be the result of intra-list and inter-list interference, respectively. The dominance of the former error type may cause a classical PSE, whereas the dominance of the latter error type may cause a reversal of PSE. Finally, an item identification task yielded no evidence of an association between intra-list interference and discriminability of items in a list.     

Money Pumps,Incompleteness, and Indeterminacy

In an alleged counter‐example to the completeness of rational preferences, a career as a clarinettist is compared with a career in law. It seems reasonable to neither want to judge that the law career is at least as preferred as the clarinet career nor want to judge that the clarinet career is at least as preferred as the law career. The two standard interpretations of examples of this kind are, first, that the examples show that preferences are rationally permitted to be incomplete and, second, that the examples show that preferences are rationally permitted to be indeterminate. In this paper, I shall argue that the difference between these interpretations is crucial for the money‐pump argument for transitivity, which is the standard argument that rational preferences are transitive. I shall argue that the money‐pump argument for transitivity fails if preferences are rationally permitted to be incomplete but that it works if preferences are rationally permitted to be indeterminate and rationally required to be complete.     

Perceptual saliency of points along the contour of everyday objects: a large-scale study

The aim of this large-scale study was to find out which points along the contour of a shape are most salient and why. Many subjects (N=161) were asked to mark salient points on contour stimuli, derived from a large set of line drawings of everyday objects (N=260). The database of more than 200,000 marked points was analyzed extensively to test the hypothesis, first formulated by Attneave (1954), that curvature extrema are most salient. This hypothesis was confirmed by the data: Highly salient points are usually very close to strong curvature extrema (positive maxima and negative minima). However, perceptual saliency of points along the contour is determined by more factors than just local absolute curvature. This was confirmed by an extensive correlational analysis of perceptual saliency in relation to ten different stimulus factors. A point is more salient when the two line segments connecting it with its two neighboring salient points make a sharp turning angle and when the 2-D part defined by the triplet of salient points is less compact and sticks out more.