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231.
Using randomly generated sequences of binary events we asked participants to make predictions about the next event. It turned out that while predicting uncertain events, people do not behave unsystematically. Our research identifies four types of relatively consistent strategies for predicting uncertain binary events: a strategy immune to short-run sequential dependencies consisting of the persistent prediction of long-run majority events, hereafter called the long-run momentum strategy; a strategy immune to short-run sequential dependencies consisting of the persistent prediction of long-run minority events, called the long-run contrarian strategy; a strategy sensitive to short-run sequential dependencies consisting of the prediction of short-run majority events, called the short-run momentum strategy; and a strategy sensitive to short-run sequential dependencies consisting of the prediction of short-run minority events, called the short-run contrarian strategy. When the character of events remains unknown, the most common strategy is the short-run momentum strategy. With the increase of a perceived randomness of the situation, people tend more often to use the short-run contrarian strategy. People differ in their general beliefs about the continuation or reversal of a trend in various natural and social processes. Trend believers, when facing sequences of binary events commonly perceived as random, tend to use momentum strategies, whereas those who believe in the trend's reversal tend to use contrarian strategies. 相似文献
232.
233.
Cudnoch-Jedrzejewska A Szczepanska-Sadowska E Dobruch J Puchalska L Ufnal M Kowalewski S Wsół A 《Stress (Amsterdam, Netherlands)》2008,11(4):290-301
The purpose of the present study was to elucidate if rats with myocardial infarction manifest altered responsiveness to central cardiovascular effects of low doses of angiotensin II (ANG II), and if ANG II and vasopressin (VP) cooperate in the central regulation of cardiovascular functions at rest and during stress. Conscious Sprague-Dawley rats with myocardial infarction induced by left coronary artery ligation, or sham-ligated (SL) controls were infused intracerebroventricularly with artificial cerebrospinal fluid (aCSF), ANG II, ANG II + VP or ANG II + V1a receptor antagonist (V1ANT) 4 weeks after cardiac surgery. In the infarcted but not in the SL rats, the resting mean arterial blood pressure (MABP) was significantly elevated by infusions of ANG II and ANG II + VP, while infusion of ANG II + V1ANT was not effective. During administration of aCSF, the pressor, and tachycardic responses to an air-jet stressor were significantly greater in the infarcted than in the SL rats. In the SL rats, the pressor responses to the stressor were significantly greater during infusions of ANG II, ANG II + VP and ANG II + V1ANT than during infusion of aCSF. The tachycardic response in the SL rats was enhanced only by the combined infusion of ANG II + VP. In the infarcted rats, the pressor and the tachycardic responses to the stressor were similar in all groups. It is concluded that: (1) under resting conditions the infarcted rats manifest sensitisation to the central pressor effect of ANG II and that this effect depends on concomitant stimulation of V1a VP receptors, (2) central ANG II may enhance the pressor response to an alarming stressor in the SL rats through an action which does not depend on the concomitant stimulation of V1a receptors, (3) the cooperative action of ANG II and VP is required for intensification of the tachycardic response to the alarming stressor in the SL rats and (4) exaggeration of the cardiovascular responses to the alarming stressor in the infarcted rats cannot be further augmented by an additional stimulation of central ANG II receptors or combined stimulation of ANG II and VP receptors. 相似文献
234.
Jerzy Gołosz 《Journal for General Philosophy of Science》2017,48(1):19-33
The paper analyzes the philosophical consequences of the recent discovery of direct violations of the time–reversal symmetry of weak interactions. It shows that although we have here an important case of the time asymmetry of one of the fundamental physical forces which could have had a great impact on the form of our world with an excess of matter over antimatter, this asymmetry cannot be treated as the asymmetry of time itself but rather as an asymmetry of some specific physical process in time. The paper also analyzes the consequences of the new discovery for the general problem of the possible connections between direction (arrow) of time and time-asymmetric laws of nature. These problems are analyzed in the context of Horwich’s Asymmetries in time: problems in the philosophy of science (1987) argumentation, trying to show that existence of a time–asymmetric law of nature is a sufficient condition for time to be anisotropic. Instead of Horwich’s sufficient condition for anisotropy of time, it is stressed that for a theory of asymmetry of time to be acceptable it should explain all fundamental time asymmetries: the asymmetry of traces, the asymmetry of causation (which holds although the electrodynamic, strong and gravitational interactions are invariant under time reversal), and the asymmetry between the fixed past and open future. It is so because the problem of the direction of time has originated from our attempts to understand these asymmetries and every plausible theory of the direction of time should explain them. 相似文献
235.
Zuzanna Siwek Anna Oleszkowicz Aleksandra Słowińska 《Journal of Happiness Studies》2017,18(2):549-573
The present study was based on two theoretical conceptions—Deci and Ryan’s self-determination theory and its characteristic approach to values, and the conception of meaning in life derived from the Logotherapy of Frankl. The aim of the study was to verify the thesis that values realized in personal strivings play a significant role in experiencing meaning in life. The study was also designed to explore the relationships between types of motivation and meaning in life. A semi-open method was used to study values and striving motivations, one based on the Personal Striving Assessment by Emmons and the Purpose in Life Test by Maholick and Crumbaugh. The sample comprised 353 students of Wroc?aw-based universities (159 women and 194 men). The findings of this study demonstrated that meaning in life is related to motivation as well as to certain values that participants reported as realized in their personal strivings. Predictors of meaning in life were the value of financial success for men, and the value of intimacy/friendship for women. Another predictor of meaning for both groups was external motivation. Further interesting results discussed in this paper were obtained by comparing individuals with low and those with high levels of meaning in life. The latter group was found to attribute greater importance to autonomous motivation and to attach greater meaning to their everyday strivings by associating them more closely with both intrinsic and extrinsic values. 相似文献
236.
Magdalena Żemojtel-Piotrowska Jarosław P. Piotrowski Jan Cieciuch Byron G. Adams Evgeny N. Osin Rahkman Ardi Sergiu Bălţătescu Arbinda Lal Bhomi Amanda Clinton Gisela T. de Clunie Carla Esteves Valdiney Gouveia Ashraf Hosseini Hooria Seyedhosseini Ghaheh Narine Khachatryan Shanmukh Vasant Kamble Anna Kawula Kadi Liik Eva Letovancova Sara Malo Cerrato Carles Alsinet Mora Sofya Nartova-Bochaver Marija Nikolic Joonha Park Elena Paspalanova Győző Pék Joanna Różycka-Tran Ha Truong Thi Khanh Takashi Tsubakita Christin-Melanie Vauclair Anna Włodarczyk John Maltby 《Journal of Happiness Studies》2017,18(6):1697-1711
This report examines the measurement invariance of the Personal Well-being Index with 8 items (PWI-8). University students (N = 5731) from 26 countries completed the measure either through paper and pencil or electronic mode. We examined uni-dimensional structure of PWI and performed a Multi-group CFA to assess the measurement invariance across the 26 countries, using conventional approach and the alignment procedure. The findings provide evidence of configural and partial metric invariance, as well as partial scalar invariance across samples. The findings suggest that PWI-8 can be used to examine correlates of life satisfaction across all included countries, however it is impossible to compare raw scores across countries. 相似文献
237.
Jarosław M. Michałowski Dawid Droździel Jacek Matuszewski Wojtek Koziejowski Katarzyna Jednoróg Artur Marchewka 《Behavior research methods》2017,49(4):1407-1419
Emotionally charged pictorial materials are frequently used in phobia research, but no existing standardized picture database is dedicated to the study of different phobias. The present work describes the results of two independent studies through which we sought to develop and validate this type of database—a Set of Fear Inducing Pictures (SFIP). In Study 1, 270 fear-relevant and 130 neutral stimuli were rated for fear, arousal, and valence by four groups of participants; small-animal (N = 34), blood/injection (N = 26), social-fearful (N = 35), and nonfearful participants (N = 22). The results from Study 1 were employed to develop the final version of the SFIP, which includes fear-relevant images of social exposure (N = 40), blood/injection (N = 80), spiders/bugs (N = 80), and angry faces (N = 30), as well as 726 neutral photographs. In Study 2, we aimed to validate the SFIP in a sample of spider, blood/injection, social-fearful, and control individuals (N = 66). The fear-relevant images were rated as being more unpleasant and led to greater fear and arousal in fearful than in nonfearful individuals. The fear images differentiated between the three fear groups in the expected directions. Overall, the present findings provide evidence for the high validity of the SFIP and confirm that the set may be successfully used in phobia research. 相似文献
238.
As a result of the increasing role of online advertising and strong competition among advertisers, intrusive techniques are commonly used to attract web users’ attention. Moreover, since marketing content is usually delivered to the target audience when they are performing typical online tasks, like searching for information or reading online content, its delivery interrupts the web user’s current cognitive process. The question posed by many researchers in the field of online advertising is: how should we measure the influence of interruption of cognitive processes on human behavior and emotional state? Much research has been conducted in this field; however, most of this research has focused on monitoring activity in the simulated environment, or processing declarative responses given by users in prepared questionnaires. In this paper, a more direct real-time approach is taken, and the effect of the interruption on a web user is analyzed directly by studying the activity of his brain. This paper presents the results of an experiment that was conducted to find the brain activity patterns associated with interruptions of the cognitive process by showing internet advertisements during a text-reading task. Three specific aspects were addressed in the experiment: individual patterns, the consistency of these patterns across trials, and the intra-subject correlation of the individual patterns. Two main effects were observed for most subjects: a drop in activity in the frontal and prefrontal cortical areas across all frequency bands, and significant changes in the frontal/prefrontal asymmetry index. 相似文献
239.
Przemysaw Piotrowski 《Journal of applied social psychology》2006,36(3):629-643
The paper presents the increasing prevalence of sports‐related violence in Poland, the distinctive characteristics of Polish football (soccer) hooliganism, and the psychosocial analysis of the phenomenon, based on a 3‐year prophylactic program geared toward boys from high‐risk groups. Football hooliganism may be described adequately in terms of coping with a sense of alienation. The article includes most of the important findings of the author's research pertaining to predisposing factors and mechanisms reducing the sense of alienation by one's affiliation with a group of football hooligans. The final part of the article touches on the consequences of the presented approach for the prevention of hooligan incidents. 相似文献
240.
Synthese - Recently, it has been objected that naïve realism is inconsistent with an empirically well-supported claim that mental states of the same fundamental kind as ordinary conscious... 相似文献