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41.
Ramírez Uclés I de la Fuente Solana EI Martín Tamayo I Vila Castellar J 《Psicothema》2006,18(4):717-723
Effect of manipulating the risetime of an acoustic stimulus on two protective reflexes: cardiac defense and motor startle. The risetime is a parametric characteristic of the eliciting stimulus frequently used to differentiate among psychophysiological reflexes. The aim of the present study was to examine the effect of manipulating the risetime of an acoustic stimulus on two protective reflexes: cardiac defense and motor startle. 100 participants underwent a psychophysiological reactivity test to five presentations of an intense acoustic stimulus (105 dB white noise) under one of five risetime conditions: 0, 24, 48, 96, and 240 ms. Total energy of the stimulus was controlled by increasing the base duration of the stimulus (1000 ms) by one third of the risetime. Results showed that risetime significantly affected motor startle but not cardiac defense. Startle amplitude decreased linearly with increasing risetime after 24 ms. On the other hand, repetition of the stimulus significantly affected cardiac defense but not motor startle. These results question the traditional differentiation between startle and defense based on risetime. 相似文献
42.
Item selection rules in a Computerized Adaptive Test for the assessment of written English. e-CAT is a Computerized Adaptive Test for the evaluation of written English knowledge, using the item selection rule most commonly employed: the maximum Fisher information criterion. Some of the problems of this criterion have a negative impact in the estimation accuracy and in the item bank security. In this study, the performance of this item selection rule is compared, by means of simulation, with two other rules: selecting the item with maximum Fisher information in an interval (Veerkamp y Berger, 1997) and a new criterion, called "maximum Fisher information in an interval with geometric mean". In general, this new rule shows smaller measurement error and smaller item overlap rates. It seems, thus, recommendable, as it allows the simultaneous improvement of estimation accuracy and the maintenance of the item bank security of e-CAT. 相似文献
43.
Frost R Kugler T Deutsch A Forster KI 《Journal of experimental psychology. Learning, memory, and cognition》2005,31(6):1293-1326
Most models of visual word recognition in alphabetic orthographies assume that words are lexically organized according to orthographic similarity. Support for this is provided by form-priming experiments that demonstrate robust facilitation when primes and targets share similar sequences of letters. The authors examined form-orthographic priming effects in Hebrew, Arabic, and English. Hebrew and Arabic have an alphabetic writing system but a Semitic morphological structure. Hebrew morphemic units are composed of noncontiguous phonemic (and letter) sequences in a given word. Results demonstrate that form-priming effects in Hebrew or Arabic are unreliable, whereas morphological priming effects with minimal letter overlap are robust. Hebrew bilingual subjects, by contrast, showed robust form-priming effects with English material, suggesting that Semitic words are lexically organized by morphological rather than orthographic principles. The authors conclude that morphology can constrain lexical organization even in alphabetic orthographies and that visual processing of words is first determined by morphological characteristics. 相似文献
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López-Torrecillas F García J Cañadas GA Uclés IR De La Fuente EI 《Psychological reports》2006,98(2):437-450
This study analyzed the validity of the Sherer, et al. Self-efficacy Scale for a Spanish sample of 555 subjects, 257 men and 298 women. 415 were from the general population; 34 schizophrenics and 45 with eating disorders were from a clinic, plus 61 drug addicts from two centers. All met DSM-IV-R criteria. The Eysenck Personality Questionnaire, State-Trait Anxiety Inventory, Assertiveness Inventory, and the Self-control Questionnaire were administered. The reliability for total scores, general factor were high even when social self-efficacy was low. A bidimensional factor structure seemed more acceptable. The Self-efficacy scale scores correlated with those on the Self-control Questionnaire and the Assertiveness Inventory. Extraversion scores on the Sincerity dimension of the Eysenck Personality Questionnaire correlated with scores on the State-Trait Anxiety Inventory and Eysenck's Neuroticism and Psychoticism scales. Significant mean differences appeared between the general population group and the three clinical groups. These analyses support the usefulness of the scale for clinical practice and research with Spanish samples. 相似文献
47.
García-Rodríguez O Secades-Villa R Alvarez Rodríguez H Río Rodríguez A Fernández-Hermida JR Carballo JL Errasti Pérez JM Al-Halabí Díaz S 《Psicothema》2007,19(1):134-139
The high drop-out rate in treatment programs is one of the most important problems in the area of drug addictions. This study evaluated the effect of the use of incentives on retention in an outpatient program for cocaine addicts. The effect of individual variables on program drop-out was also analysed. Participants were 66 subjects who were randomly assigned to one of three treatment groups: standard treatment, treatment with incentives I, and treatment with incentives II. The patients of these two groups received incentives contingent on cocaine abstinence with two different magnitudes. Retention rate at six months was 35% in the standard treatment, 78.6% in the treatment with incentives I, and 53.3% in the treatment with incentives II. The global prognostic capacity of the individual variables (sociodemographic, history and consumption pattern, psychopathological variables, and EuropASI scores) was 85.7%, with the psychopathological variables being more closely related to retention. These results suggest that the use of incentives may be an effective strategy to improve retention in outpatient treatments for cocaine addiction. 相似文献
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Jure Ramšak 《宗教、国家与社会》2015,43(2):168-183
In this article I discuss the controversy concerning the rights of believers which developed among younger theologians, some laymen and some representatives of the faithful on the one hand, and communist politicians and Marxist theorists on the other, in Slovenia in the 1970s. In comparison with other socialist countries, the level of religious freedoms in multireligious Yugoslavia was relatively high; the same can be said about the country’s relations with the Holy See, with which diplomatic relations at the highest level were restored in 1970. The controversy opened key questions about the relationship between Marxism and atheism under Yugoslav self-management socialism and touched some of the basic ideological postulates on which the League of Communists (LC) built its social engagement. Demands for greater equality for believers were rejected as unfounded in the vast majority of cases and did not trigger a change in the established understanding of religion by the ruling communist party. However, the awareness of everyday discrimination against believers in their public life spread amongst the younger generation of more liberal-oriented communist leaders. At a time when the Yugoslav party was preparing for the difficult period following the imminent death of President Tito and in this period was counting on the loyalty of believers, communist leaders were willing to condemn the most outstanding examples of ‘sectarianism’, of which there was no scarcity in the ranks of the LC, while at the same time a change in programming principles in regard to religion remained out of the question. The prevailing conviction remained that religion would die out of its own accord, but that in the meantime it was necessary to ensure full equality for nonbelievers and believers alike. 相似文献
50.
Sy-Miin Chow Jason J. Bendezú Pamela M. Cole Nilam Ram 《Multivariate behavioral research》2016,51(2-3):154-184
Several approaches exist for estimating the derivatives of observed data for model exploration purposes, including functional data analysis (FDA; Ramsay &; Silverman, 2005), generalized local linear approximation (GLLA; Boker, Deboeck, Edler, &; Peel, 2010), and generalized orthogonal local derivative approximation (GOLD; Deboeck, 2010). These derivative estimation procedures can be used in a two-stage process to fit mixed effects ordinary differential equation (ODE) models. While the performance and utility of these routines for estimating linear ODEs have been established, they have not yet been evaluated in the context of nonlinear ODEs with mixed effects. We compared properties of the GLLA and GOLD to an FDA-based two-stage approach denoted herein as functional ordinary differential equation with mixed effects (FODEmixed) in a Monte Carlo (MC) study using a nonlinear coupled oscillators model with mixed effects. Simulation results showed that overall, the FODEmixed outperformed both the GLLA and GOLD across all the embedding dimensions considered, but a novel use of a fourth-order GLLA approach combined with very high embedding dimensions yielded estimation results that almost paralleled those from the FODEmixed. We discuss the strengths and limitations of each approach and demonstrate how output from each stage of FODEmixed may be used to inform empirical modeling of young children’s self-regulation. 相似文献