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101.
Torres-Harding SR Andrade AL Romero Diaz CE 《Cultural diversity & ethnic minority psychology》2012,18(2):153-164
Racial microaggressions refer to the racial indignities, slights, mistreatment, or offenses that people of color may face on a recurrent or consistent basis. Racial microaggressions may represent a significant source of stress endured by people of color. The purpose of this study was to develop a scale to measure racial microaggressions. Exploratory factor analyses and confirmatory factor analyses were used to assess the dimensionality of the scale. The internal reliability, convergent validity, and concurrent validity of the scale were also explored. Results indicated that the Racial Microaggression Scale is a multidimensional tool to assess perceptions of racial microaggressions by people of color. 相似文献
102.
Andrea J. Romero Lisa M. Edwards Stephanie A. Fryberg Michele Orduña 《Journal of applied social psychology》2014,44(1):1-11
Ethnic identity development may increase resilience to discrimination and prejudice, which are often common and stressful for ethnic minority adolescents. Based on ethnic identity development theory and resilience theory, we hypothesize that under high discrimination stress, ethnic affirmation and ethnic identity stage will have protective moderating effects on self‐esteem and depressive symptoms. A cross‐sectional self‐report study with 125 ethnic minority adolescents (13–18 years) found that ethnic affirmation (p < .05) had protective effects on depressive symptoms (p < .05) and protective‐enhancing effects on self‐esteem at high levels of discrimination stress. Achieved ethnic identity stage (p < .05) had protective‐stabilizing effects on self‐esteem at high discrimination stress. Our findings demonstrate that the protective elements of ethnic identity are feeling positive about one's ethnic group, having learned about one's history, and having resolved conflicts about one's ethnic group. 相似文献
103.
Paul S. Bradley Christopher Carling Antonio Gomez Diaz Peter Hood Chris Barnes Jack Ade Mark Boddy Peter Krustrup Magni Mohr 《Human movement science》2013,32(4):808-821
The aim of this study was to compare the match performance and physical capacity of players in the top three competitive standards of English soccer. Match performance data were collected from players in the FA Premier League (n = 190), Championship (n = 155) and League 1 (n = 366) using a multiple-camera system. In addition, a selection of players from the Premier League (n = 56), Championship (n = 61) and League 1 (n = 32) performed the Yo-Yo intermittent endurance test level 2 (Yo-Yo IE2) to determine physical capacity. Players in League 1 and the Championship performed more (p < .01) high-intensity running than those in the Premier League (Effect Size [ES]: 0.4–1.0). Technical indicators such as pass completion, frequency of forward and total passes, balls received and average touches per possession were 4–39% higher (p < .01) in the Premier League compared to lower standards (ES: 0.3–0.6). Players also covered more (p < .05) high-intensity running when moving down (n = 20) from the Premier League to the Championship (ES: 0.4) but not when players moved up (n = 18) standards (ES: 0.2). Similar Yo-Yo IE2 test performances were observed in Premier League, Championship and League 1 players (ES: 0.2–0.3). Large magnitude relationships (p < .05) were observed between Yo-Yo IE2 test performances and the total and high-intensity running distance covered in both Championship (r = .56 and .64) and Premier League matches (r = .61 and .54). The data demonstrate that high-intensity running distance was greater in players at lower compared to higher competitive standards despite a similar physical capacity in a subsample of players in each standard. These findings could be associated with technical characteristics inherent to lower standards that require players to tax their physical capacity to a greater extent but additional research is still required to confirm these findings. 相似文献
104.
Luis Moya‐Albiol Sara De Andrés‐García María Victoria Sanchis‐Calatayud Patricia Sariñana‐González Nicolás Ruiz‐Robledillo Ángel Romero‐Martínez Esperanza González‐Bono 《International journal of psychology》2013,48(4):542-550
Instances of sustained cooperative behaviour in humans can be considered as an adaptive strategy that enhances the probability of reaching a goal. This study investigates psychophysiological responses to cooperation in healthy subjects, while considering outcome and gender as potential moderators of these responses. Salivary cortisol levels (Csal), heart rate (HR), skin conductance level (SCL), nonspecific skin conductance responses (NSRs), and mood states were measured at different points before, during and after a Lego house‐building task in undergraduate men (n = 22) and women (n = 20). Once the task was finished, the experimenter informed the participants about the outcome obtained (positive or negative). Cooperation produces an increase in HR, SCL, and NSR responses. When the outcome is positive it produces a gradual diminution in Csal levels, but when the outcome is negative there is a significant increase in Csal levels after the task followed by a progressive decrease. Men with positive outcomes showed a lower area under curve (AUC) in Csal than women with a negative outcome. Men had more NSR responses in all periods other than the rest period. Several mood states are differently affected by the combined effect of outcome and gender. Our laboratory results can be generalized to other situations in which negotiation, mediation, and cooperative strategies are relevant for taking decisions and/or solving problems. 相似文献
105.
T.A. Khraishi H.M. Zbib T. Diaz de la Rubia M. Victoria 《Philosophical Magazine Letters》2013,93(9):583-593
A new simulation technique (three-dimensional dislocation dynamics) enabling the capture of a hardening effect in metals due to irradiation is reported. When bombarded with high-energy particles, metals accrue internal damage. In irradiated Pd, for example, damage takes the form of interstitial loops. Such loops are nano-sized and typically have a high number density. The stress field of a loop is given from dislocation theory. It is shown here the hardening is due to the elastic interaction of gliding dislocations with a high number of spatially dispersed interstitial loops. Results are found to correlate well with experiments. 相似文献
106.
The finite-element method has been used to simulate the indentation process of a variety of isotropic elastic-plastic materials indented by a rigid conical indenter with a perfectly sharp tip and round tips of various radii. Analyses of the obtained loading curves showed that the load frame compliance Cf of the nanoindentation instrument and the tip roundness r of the indenter can be determined from the loading curve. In a real indentation experiment, the obtained raw load-depth data during the loading stage can be described by the second-order polynomial dependence of depth on the square root of load, from which the Cf and r values are determined. An experimental procedure has thus been proposed for Cf and r calibration using the loading curves of a hard and isotropic material. Nanoindentation experiments on fused silica demonstrate the reliability of the proposed technique for accurate and quick Cf and r calibration. 相似文献
107.
Moono Rhee David H. Lassila Vasily V. Bulatov Luke Hsiung Tomas Diaz de la Rubia 《Philosophical Magazine Letters》2013,93(9):595-605
Plastic deformation of Mo single crystals is examined by direct simulation of dislocation dynamics under stress. Initial dislocation populations are made to mimic real dislocation microstructures observed in transmission electron microscopy cross-sections of pure annealed Mo single crystals. No a priori sources for dislocation multiplication are introduced, and yet multiplication takes place through a sequence involving aggregation of grown-in superjogs, bowing of screw dislocation segments and fast lateral motion of edge segments, producing a large number of elongated loops and a characteristic cross-grid pattern of screw dislocations. 相似文献
108.
Social comparison research suggests that people seek upward comparisons if the achievement seems attainable, but avoid them if it appears unattainable. This experiment (N = 169) manipulated attainability by presenting body-improvement articles about dieting/exercising (experimental group) or body-unrelated articles (control group). Social comparison choices were recorded through selective advertisement exposure, as participants browsed a computerized magazine with both “ideal body” ads and “regular person” ads. Body satisfaction was measured before and after exposure. Body-dissatisfied readers in the control group circumvented ideal body ads compared to satisfied readers. Body-dissatisfied participants in the experimental group viewed ideal body images longer than in the control group. No impact of ideal body imagery exposure on body satisfaction was found. 相似文献
109.
Igor Sotgiu Dario Galati Mayra Manzano Marina Gandione Kyuttzza Gómez Yuniel Romero 《The Journal of genetic psychology》2013,174(4):353-375
In this study the authors used a cross-cultural approach to examine parental attitudes, attachment styles, social networks, and some of the psychological processes involved in Autism Spectrum Disorders (ASD). Fifty-two children (aged 4–11 years) took part in the study: 30 Italians (15 with ASD and 15 controls) and 22 Cubans (11 with ASD and 11 controls). Findings indicated significant differences between the two cultural groups in terms of the structure of the children's social network and parental attitudes toward their children. However, the mother–child attachment relationship and cognitive and emotional functioning of the study participants were independent of culture. 相似文献
110.
Many studies have found that patients with Alzheimer's disease (AD) perform significantly worse than normal controls on verbal fluency tasks. Moreover, some studies have found that AD patients' deficits compared to controls are more severe for semantic fluency (e.g., vegetables) than for letter fluency (e.g. words that begin with F). These studies, however, have not taken category size into account. A comparison of AD patients and age-matched controls on three semantic and three letter categories revealed that both the size and type of a category significantly predicted AD patients' deficits on verbal fluency tasks. These results suggest that the verbal fluency of AD patients will be most attenuated on large semantic categories. 相似文献