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101.
Horacio Arló Costa 《Philosophical Studies》2006,128(1):7-48
An important trend in contemporary epistemology centers on elaborating an old idea of pragmatist pedigree: theory selection
(and in general the process of changing view and fixing beliefs) presupposes epistemic values. This article focuses on analyzing
the case where epistemic values are indeterminate or when the sources of valuation are multiple (epistemic values like coherence
and simplicity need not order options in compatible ways). According to the theory that thus arises epistemic alternatives
need not be fully ordered by an underlying notion of information-value and therefore the usual economic techniques of optimization cannot be applied in order to compute optimal contractions. But in cases of this sort it is still rational to maximize, i.e. to deem an option as choosable when it is not known to be worse that any other. We present here basic results about
a notion of liberal contraction based on maximizing quasi-orderings. This requires the previous solution of some open problems in the theory of rational
choice functions, namely a full characterization of choice functions rationalizable in terms of maximization of quasi-transitive
relations. We conclude by discussing the problem of what is the adequate feasible set for calculating maximizing solutions
for contraction problems and by considering the epistemological roots of some counterexamples against the most fundamental
axioms on choice functions (like α). While the first part of the paper shows how economic insights can be used to improve our understanding of the principles
of belief formation and change, this final section reverses this strategy by showing the utility of epistemological insights
and techniques for providing invariance conditions capable of regulating the applicability of the pure principles of choice. 相似文献
102.
Horacio Arló Costa 《Journal of Philosophical Logic》2005,34(5-6):581-605
The article focuses on representing different forms of non-adjunctive inference as sub-Kripkean systems of classical modal logic, where the inference from □A and □B to □A∧B fails. In particular we prove a completeness result showing that the modal system that Schotch and Jennings derive from a
form of non-adjunctive inference in (Schotch and Jennings, 1980) is a classical system strictly stronger than EMN and weaker than K (following the notation for classical modalities presented in Chellas, 1980). The unified semantical characterization in
terms of neighborhoods permits comparisons between different forms of non-adjunctive inference. For example, we show that
the non-adjunctive logic proposed in (Schotch and Jennings, 1980) is not adequate in general for representing the logic of
high probability operators. An alternative interpretation of the forcing relation of Schotch and Jennings is derived from
the proposed unified semantics and utilized in order to propose a more fine-grained measure of epistemic coherence than the
one presented in (Schotch and Jennings, 1980). Finally we propose a syntactic translation of the purely implicative part of
Jaśkowski's system D2 into a classical system preserving all the theorems (and non-theorems) explicilty mentioned in (Jaśkowski, 1969). The translation
method can be used in order to develop epistemic semantics for a larger class of non-adjunctive (discursive) logics than the
ones historically investigated by Jaśkowski. 相似文献
103.
Miranda Casas A Fernández Andrés MI García Castellar R Roselló Miranda B Colomer Diago C 《Psicothema》2011,23(4):688-694
The aim of this work was to study the specificity of deficits in linguistic and executive functioning of students with ADHD and with RCD and to determine the profile of deficits in the comorbid group (ADHD+RCD). Participants in the study were 84 students, ages 12-16 years divided into four groups with an equal number of subjects (N= 21): ADHD, RCD, ADHD+RCD and comparison group (without ADHD and without RCD). We measured vocabulary, oral comprehension, lexical access, verbal and visual working memory, inhibition and attention. The results show that the ADHD+RCD group presents the most important linguistic deficits, followed by the RCD group. On the other hand, the three clinical groups (ADHD, RCD and ADHD+RCD) display greater performance problems in working memory than the comparison group, whereas the two groups with ADHD had more problems in attention and inhibition. These results suggest the dissociation of linguistic and executive deficits that affect the RCD group and ADHD group to a greater extent, respectively. Lastly, the comorbid group showed deficits both in language and in executive skills. We discuss the implications of these findings for designing interventions. 相似文献
104.
Garcia-Lopez LJ Inglés CJ García-Fernández JM Hidalgo MD Bermejo R Puklek Levpušček M 《Journal of personality assessment》2011,93(5):474-482
This study examined the reliability and validity evidence drawn from the scores of the Spanish version of the Slovenian-developed Social Anxiety Scale for Adolescents (SASA; Puklek, 1997; Puklek & Vidmar, 2000) using a community sample (Study 1) and a clinical sample (Study 2). Confirmatory factor analysis in Study 1 replicated the 2-factor structure found by the original authors in a sample of Slovenian adolescents. Test-retest reliability was adequate. Furthermore, the SASA correlated significantly with other social anxiety scales, supporting concurrent validity evidence in Spanish adolescents. The results of Study 2 confirmed the correlations between the SASA and other social anxiety measures in a clinical sample. In addition, findings revealed that the SASA can effectively discriminate between adolescents with a clinical diagnosis of social anxiety disorder (SAD) and those without this disorder. Finally, cut-off scores for the SASA are provided for Spanish adolescents. 相似文献
105.
Almela M Hidalgo V Villada C Espín L Gómez-Amor J Salvador A 《Stress (Amsterdam, Netherlands)》2011,14(2):117-127
Stress has been identified as a main factor involved in the cognitive changes that occur during the aging process. This study investigated sex differences in the relationship between the magnitude of the acute stress-induced salivary cortisol response and memory performance among middle-aged people. To this end, 16 men and 16 women (aged 54-72 years) were exposed to the Trier Social Stress Test and a control condition in a crossover design. Afterwards their memory performance was measured using a standardized memory test (Rey's Auditory Verbal Learning Test). Only among women, there was an acute impact of stress on memory performance and a significant relationship between a higher cortisol response to the stressor and poorer memory performance in both the stress and control conditions. Additionally, a poorer memory performance was related to earlier timing of sexual maturation (age at menarche), which was also marginally related to higher cortisol reactivity to stress. These results confirm that sex is a critical factor in the relationship between cortisol and poor memory performance. Furthermore, the findings emphasize a strong link between the individual cortisol response to stress and memory functioning among postmenopausal women. 相似文献
106.
General Factor of Personality (GFP) research is an emergent field in personality research. This paper uses a theoretical mathematical model to predict the short-term effects of a dose of a stimulant drug on GFP and reports the results of an experiment showing how caffeine achieves this. This study considers the General Factor of Personality Questionnaire (GFPQ) a good psychometric approach to assess GFP. The GFP dynamic mechanism of change is based on the Unique Trait Personality Theory (UTPT). This theory proposes the existence of GFP which occupies the apex of the hierarchy of personality, and extends from an impulsiveness-and-aggressiveness pole (approach tendency) to an anxiety-and-introversion pole (avoidance tendency). An experiment with 25 volunteers was performed. All the participants completed the GFPQ and the Sensation-Seeking Scale list of adjectives from the trait version of MAACL-R (Multiple Affect Adjective Checklist Revised) on an empty stomach. The participants in the experimental group (20) received 330 mg of caffeine. All the participants filled in a state version form with the sensation-seeking adjectives every 4.5 minutes. This study considers that the Sensation-Seeking Scale list of adjectives from the MAACL-R, available in both trait and state versions, is a good psychometric approach to assess GFP. The results show that GFP is modified by a single dose of caffeine in the direction predicted by the UTPT. 相似文献
107.
Sora Miana B González-Morales MG Caballer A Peiró JM 《The Spanish journal of psychology》2011,14(2):820-831
In recent decades, transformations in organizations and the labour market have produced an increase in employee job insecurity. In response to this situation, workers present different negative reactions. However, the intensity of these reactions varies across studies that have investigated the outcomes of job insecurity. One possible explanation for this inconsistency may lie in the influence of other factors, such as the occupational group (Sverke et al., 2002). The aim of this study is to provide additional evidence about the relationship between job insecurity and its outcomes (i.e., life satisfaction, job satisfaction, perceived performance and organizational commitment), and examine the moderator role of occupational group in this relationship. The sample was composed of 321 employees from different Spanish organizations. The results showed that job insecurity was directly and negatively related to life satisfaction, job satisfaction and organizational commitment, and they suggest that occupational group moderated relations between job insecurity and three studied outcomes. In the case of life satisfaction and perceived performance, this relationship was stronger among blue collar workers. The relationship between job insecurity and job satisfaction was stronger in white collar workers. The implications and limitations of this study are discussed. 相似文献
108.
Martínez MP Miró E Sánchez AI Mundo A Martínez E 《Scandinavian journal of psychology》2012,53(1):54-63
Insecure attachment has been hypothesized to be an important factor for understanding the experience of pain. Considering the Attachment-Diathesis Model of Chronic Pain developed by Meredith, Ownsworth, and Strong (2008), this cross-sectional study examines the relationship between attachment style, pain appraisal, and illness behavior. Two hundred healthy women recruited from community contexts completed a battery of self-report measures including the Short-form McGill Pain Questionnaire, Pain Catastrophizing Scale, Pain Anxiety Symptoms Scale-20, Pain Vigilance and Awareness Questionnaire, Illness Attitude Scales, Beck Anxiety Inventory, Beck Depression Inventory, and the Experiences in Close Relationships Questionnaire-Revised. The results showed that attachment anxiety was significantly correlated with pain catastrophizing, pain-related fear, depression, and illness behavior. However, attachment anxiety and avoidance were not associated with pain intensity. Attachment anxiety moderated the relationship between pain catastrophizing and illness behavior, and between pain hypervigilance and illness behavior. Pain catastrophizing and pain-related fear partially mediated the effect of attachment anxiety on illness behavior. The findings highlight potential contributions of attachment style and pain appraisal for explaining illness behavior. This study supports earlier reports and suggests the usefulness of assessing attachment style for early identification of people who might exhibit a high risk of dysfunctional responses to pain. Our findings also suggest that increasing people's insight about their attachment style and modifying some associated dysfunctional responses may be important in the treatment of chronic pain. 相似文献
109.
Building up on the socially induced model of burnout and the job demands-resources model, we examine how burnout can transfer without direct contagion or close contact among employees. Based on the social information processing approach and the conservation of resources theory, we propose that perceived collective burnout emerges as an organizational-level construct (employees' shared perceptions about how burned out are their colleagues) and that it predicts individual burnout over and above indicators of demands and resources. Data were gathered during the first term and again during the last term of the academic year among 555 teachers from 100 schools. The core dimensions of burnout, exhaustion, and cynicism were measured at the individual and collective level. Random coefficient models were computed in a lagged effects design. Results showed that perceived collective burnout at Time 1 was a significant predictor of burnout at Time 2 after considering previous levels of burnout, demands (workload, teacher-student ratio, and absenteeism rates), and resources (quality of school facilities). These findings suggest that perceived collective burnout is an important characteristic of the work environment that can be a significant factor in the development of burnout. 相似文献
110.