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411.
Martín Del Buey Fde A Fernández Zapico A Martín Palacio E Dapelo Pellerano B Marcone Trigo R Granados Urban P 《Psicothema》2008,20(2):224-228
This study falls within the theoretical framework of the construct of the Efficient Personality. In this work, we present the study of validity and reliability of an original questionnaire made up of 60 items, applied to students from formative cycles of higher Professional Training. The questionnaire was reduced to 24 items, surpassing its initial .84 Cronbach alpha coefficient. Six first-order factors were obtained: Social Self-concept, Academic Self-concept, Solving Ability, Self-esteem, and Problem Coping. One second-order factor was obtained: Efficient Personality. The six-component factorial solution is similar both to the Spanish version for secondary school and to the Chilean versions for secondary and university populations, dividing the initial dimension of Self-concept into Self-concept and Self-esteem. 相似文献
412.
This study describes the process of developing a scale to measure the leadership capacity of players in sports teams. Research into sports leadership has focused almost exclusively on the formal leadership of the coach, in which the studies by Chelladurai, with his five-factor model, have become an essential point of reference. Nevertheless, hardly any research has been carried out into the leadership that certain players exercise over the other team members. For this purpose, a sample of 143 male basketball players was used; these participants were asked to evaluate the characteristics of the sports leader over a total of 54 indicators. Firstly, explanatory factor analysis was performed with participants' responses, using principal axis and oblique rotation methods. The factor structure obtained was then subjected to confirmatory factorial analysis, enabling us to propose a Sports Leader Evaluation Scale (EELD, in Spanish) with 18 items grouped into 3 factors, denominated empathy and responsibility, assertiveness, and impulsiveness. Satisfactory fit indices were obtained for the model, for the reliability of items and for the internal consistency of factors. 相似文献
413.
414.
Sánchez-Navarro JP Martínez-Selva JM Torrente G Román F 《The Spanish journal of psychology》2008,11(1):16-25
Previous research on the components of the emotional response employing factor analytic studies has yielded a two-factor structure (Lang, Greenwald, Bradley, & Hamm, 1993; Cuthbert, Schupp, Bradley, Birbaumer, & Lang, 2000). However, the startle blink reflex, a widely employed measure of the emotional response, has not been considered to date. We decided to include two parameters of the startle reflex (magnitude and latency) in order to explore further how this response fits into the two-factor model of emotion. We recorded the acoustic startle blink response, skin conductance response, heart rate, free viewing time, and picture valence and arousal ratings of 45 subjects while viewing 54 pictures from the International Affective Picture System (IAPS; 18 unpleasant, 18 neutral, and 18 pleasant). Factorizations of all measures gave a two-factor solution (valence and arousal) that accounted for 70% of the variance. Although some measurements, including heart rate change, did not behave as predicted, our results reinforce the two-dimension model of the emotion, and show that startle fits into the model. 相似文献
415.
Lasa Aristu A Holgado Tello FP Carrasco Ortiz MA del Barrio Gándara MV 《The Spanish journal of psychology》2008,11(2):670-677
The present study examined the structure of Bryant's Empathy Index (BEI) using different samples for conducting exploratory and confirmatory analyses. The BEI was administered to a sample of 2714 children (mean age 11.12, SD = 1.59). Exploratory and confirmatory factor analyses showed a three-factor structure: Feelings of Sadness, Understanding Feelings and Tearful Reaction. The results revealed both the multidimensionality of the instrument and appropriate fit indices for the model proposed. Although these results were very similar to those reported in other studies with a Spanish population, the analyses were conducted in a more robust way: with a larger sample and using polychoric correlations and cross validation estimation. 相似文献
416.
Xeres Delmendo John C. Borrero Kenneth L. Beauchamp Monica T. Francisco 《Journal of applied behavior analysis》2009,42(3):609-625
We conducted preference assessments with 4 typically developing children to identify potential reinforcers and assessed the reinforcing efficacy of those stimuli. Next, we tested two predictions of economic theory: that overall consumption (reinforcers obtained) would decrease as the unit price (response requirement per reinforcer) increased and that the cost and benefit components that defined unit price would not influence overall consumption considerably when unit price values were equal. We tested these predictions by arranging unit price such that the denominator was one (e.g., two responses produced one reinforcer) or two (e.g., four responses produced two reinforcers). Results showed that consumption decreased as unit price increased and that unit price values with different components produced similar consumption. 相似文献
417.
For over four decades the Wisconsin Card Sorting Test (WCST) has been one of the most distinctive tests of prefrontal function. Clinical research and recent brain imaging have brought into question the validity and specificity of this test as a marker of frontal dysfunction. Clinical studies with neurological patients have confirmed that, in its traditional form, the WCST fails to discriminate between frontal and non-frontal lesions. In addition, functional brain imaging studies show rapid and widespread activation across frontal and non-frontal brain regions during WCST performance. These studies suggest that the concept of an anatomically pure test of prefrontal function is not only empirically unattainable, but also theoretically inaccurate. The aim of the present review is to examine the causes of these criticisms and to resolve them by incorporating new methodological and conceptual advances in order to improve the construct validity of WCST scores and their relationship to prefrontal executive functions. We conclude that these objectives can be achieved by drawing on theory-guided experimental design, and on precise spatial and temporal sampling of brain activity, and then exemplify this using an integrative model of prefrontal function [i.e., Miller, E. K. (2000). The prefrontal cortex and cognitive control. Nature Reviews Neuroscience, 1, 59–65.] combined with the formal information theoretical approach to cognitive control [Koechlin, E., & Summerfield, C. (2007). An information theoretical approach to prefrontal executive function. Trends in Cognitive Sciences, 11, 229–235.]. 相似文献
418.
Francisco J. Heredia-López José L. Bata-García José L. Góngora-Alfaro Fernando J. Alvarez-Cervera Joaquín Azpiroz-Leehan 《Behavior research methods》2009,41(2):352-358
This article describes the design and preliminary evaluation of a small-sized and low energy consumption wearable wireless
telemetry system for the recording of extracellular neuronal activity, with the possibility of selecting one of four channels.
The system comprises four radio frequency (RF) transceivers, three microcontrollers, and a digital amplifier and filter. This
constitutes an innovative distributed processing approach. Gain, cutoff frequencies, and channel selection are remotely adjusted.
Digital data transmission is used for both the bioelectrical signals and the control commands. This feature offers superior
immunity to external RF interference. Real-time viewing of the acquired data allows the researcher to select only relevant
data for storage. Simultaneous recordings of neuronal activity from the striatum of a freely moving rat, both with the wireless
device and with a wired data acquisition system, are shown. 相似文献
419.
The purpose of the present study was to analyze the prevalence of various problems of living together and school violence in a sample of 1629 pupils of Spain, Austria, France, and Hungary. The personal effect of these problems was also analyzed. The results obtained indicate a high prevalence of various school harassment behaviors (such as insults, fights, lack of rules for living together, etc.) in Austria, France, and Spain, being significantly lower in Hungary. As far as the personal effect, along with abusive behaviors among students, the students consider lack of motivation and troubled relations with teaching staff to be very significant. 相似文献
420.
Two samples of university students completed self-report measures of chronic procrastination and either self-concept variables (Sample 1, n = 233) or self-presentational styles (Sample 2, n = 210). Results indicated that procrastination was significantly related to a self-concept of oneself as dominated by issues related to task performance, and to self-presentation strategies that reflected a person as continually justifying and excusing task delays and being "needy" of others' approval. It seems that men and women procrastinate in order to improve their social standing by making their accomplishments seem greater than they really are. 相似文献