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61.
62.
In the present study, we examined how expectations about the affective valence of an event influence immediate neurocognitive responses to the event. Both neutral images and negative images displaying war photos were shown to active duty military personnel undergoing predeployment training. Expectations regarding the affective content of upcoming images were manipulated by means of abstract visual cues that were valid only 75% of the time. Besides providing greater ecological validity, inclusion of invalid cues enabled us to examine separately, effects of the expected and actual valence of the images. Neurocognitive responses within the first second after image presentation were examined using the late positive potential (LPP), a noninvasive measure of brain electrical activity known to index affective processes. Negative images evoked an enhanced LPP relative to neutral images over central-parietal and right anterior electrode sites. Both the central-parietal and anterior LPP were found, likewise, to be modulated by expected valence. Expectation of negative versus neutral images led to an enhanced central-parietal LPP and an attenuated anterior LPP over both hemispheres independent of image valence. These findings are interpreted in terms of the allocation of attention to motivationally salient events, affective interpretation of those events, and induced affective/motivational states. By helping to characterize affective responses to acute stress and the regulation of those responses by psychological context, our study contributes to a basic understanding of how such regulation may become disordered and may aid in the development of targets for therapeutic interventions. 相似文献
63.
Filip Van Opstal Wim Gevers Magda Osman Tom Verguts 《Consciousness and cognition》2010,19(4):999-1006
The nature of unconscious information processing is a heavily debated issue in cognitive science (e.g., Kouider & Dehaene, 2007), and neuroscience (e.g., Crick & Koch, 1998). Traditionally, it has been thought that unconscious cognitive processing is restricted to knowledge that is strongly prepared by conscious processes (e.g., Dehaene et al., 1998). In three experiments, we show that the task that is performed consciously can also be applied unconsciously to items outside the current task set. We found that a same–different judgment of two target stimuli was also performed on two subliminally presented prime stimuli. This was true for target and prime stimuli from entirely different categories, as well as for prime and target stimuli at different levels of abstraction. These results reveal that unconscious processing can generalize more widely than previously accepted. 相似文献
64.
This article reports on a study of perceptions of sexual harassment when a victim offers verbal resistance, and introduces the theoretical application of the notion that women sometimes use token resistance to sexual attention. Perceptions of sexual harassment were examined based on a vignette in which physical or verbal harassment and victim's facial expression were varied. Participants were 337 undergraduates (91% European American, 5% African American, 1% Hispanic American, 1% Asian American). Perceptions of sexual harassment were stronger for physical harassment than verbal harassment, except when the target smiled. Overall, women had stronger perceptions of harassment than did men. Also, a stronger belief in women's use of token resistance to sex was associated with weaker perceptions of sexual harassment. These findings suggest that a number of factors influence perceptions of harassment, even when a victim verbally resists. 相似文献
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66.
Osman MP 《Journal of the American Psychoanalytic Association》2004,52(4):975-997
A close reading of sources Freud used in writing Totem and Taboo supports the thesis that a predecessor archaic oedipus complex is instrumental in motivating religious worship. This early-life complex manifests a psychodynamic in which birth, growth, and self-realization, to varying degree in each individual, tend to be psychically correlated with diminution and harm vis-à-vis one's procreators. As a result, the psychodynamic is likely to induce unease over youth exercising its powers. The story of Adam and Eve, which depicts a growing self-determination being stymied and coming to grief, is a mythic epitome of this psychodynamic. Religious practices serve to expiate the sense of unease, partly by replenishing and even recasting seemingly diminished procreators, through myth and ritual, into omnipotent, immortal entities, and partly by reversing individuation's challenge to authority by exhorting submission to, and even union, with the divine parent. The sources used in demonstrating the various means whereby religious practices serve to ameliorate the burden of "original sin" include W. R. Smith (1894), the Old Testament, and studies of archaic religious rites, including those of the Aztecs. 相似文献
67.
Osman A Albert R Ridderinkhof KR Band G van der Molen M 《Journal of experimental psychology. Human perception and performance》2006,32(4):986-1005
A frequency analysis was used to tag cortical activity from imagined rhythmic movements. Participants synchronized overt and imagined taps with brief visual stimuli presented at a constant rate, alternating between left and right index fingers. Brain potentials were recorded from across the scalp and topographic maps made of their power at the alternation frequency between left and right taps. Two prominent power foci occurred in each hemisphere for both overt and imagined taps, one over sensorimotor cortex and the other over posterior parietal cortex, with homologous foci in opposite hemispheres arising from oscillations 180 degrees out of phase. These findings demonstrate temporal isomorphism at a neural level between overt and imagined movements and illustrate a new approach to studying covert actions. 相似文献
68.
Assessed the reliability, validity, and predictive power of a new measure, the Reasons for Living Inventory for Adolescents (RFL-A; Osman et al., 1998). A group of 206 (101 boys and 105 girls) adolescent psychiatric inpatients completed the RFL-A, Minnesota Multiphasic Personality Inventory for Adolescents (Butcher et al., 1992), and a packet of self-report measures. Additional information about the patients including diagnosis and suicide status were obtained from their medical records. It was determined that the RFL-A is a valid and reliable measure of adolescent suicide risk potential. Additionally, the RFL-A possesses better predictive power than the Beck Hopelessness Scale (Beck, Weissman, Lester, & Trexler, 1974). A discussion of the clinical and research utility of the RFL-A is included along with suggestions for future research. 相似文献
69.
Does motor programming necessitate response execution? 总被引:4,自引:0,他引:4
A Osman S Kornblum D E Meyer 《Journal of experimental psychology. Human perception and performance》1990,16(1):183-198
The complexity of a movement is known to affect the time it takes to initiate the movement. This effect is thought to reflect changes in the duration of processes that operate on a motor program. This question addressed here is whether programming a movement compels the start of its overt execution. If it does, then the programming processes may be said to occur after the "point of no return." We report results from an empirical procedure and a theoretical analysis designed to study processes before and after this point separately. According to our results, changes in the complexity of a movement affect only the prior set of processes. From this we argue that motor programming does not necessitate response execution and that the point of no return occurs very late in the information-processing system. 相似文献
70.