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41.
Rasha Abdel Rahman Werner Sommer Ella Olada 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》2004,57(5):819-834
In four experiments on the identification of familiar faces we reassessed a robust performance pattern—namely, the temporal advantage for retrieving biographical facts as compared to recalling proper names, which has been interpreted as reflecting a serial ordering of the access to semantic and name information. Evidence for recent parallel accounts had been provided by Scanlan and Johnston (1997) who reported an advantage for name retrieval in children. Here we replicated the findings of Scanlan and Johnston but also showed that the naming advantage disappears, and performance is very similar to that of adults when stimuli and tasks are used that are familiar to children. Conversely, we also demonstrated an advantage for name retrieval in adults when highly unfamiliar semantic facts were associated with the faces. Together these findings suggest that there is no fundamental difference in the cognitive architectures of children and adults. The experiments indicate that the relative speed of naming and semantic fact retrieval depends on the expertise with the semantic facts to be retrieved. Implications for models of face identification and naming are discussed. 相似文献
42.
J Matt H Leuthold W Sommer 《Journal of experimental psychology. Learning, memory, and cognition》1992,18(4):810-822
Expectancy has been used to explain the effects of stimulus sequences both on reaction times (RTs) and on the P300 component of the human event-related potential. However, there are conflicting views about the control obtainable over these underlying expectancies. We compared the effects of voluntary expectancies for stimulus changes or repetitions in random tone series on RTs and the P300. Ss responded according to either stimulus identity (Experiment 1) or stimulus sequence (Experiment 2). In both experiments RTs were strongly affected by event expectedness. P300 amplitude, on the other hand, was affected (as a trend) only in Experiment 2. The results suggest that there are at least 2 types of "expectancy", one that is largely automatic and inflexible, reflected in P300 amplitude, and a second, controlled process that is reflected mainly in RT. The latter type of expectancy appears to affect processing stages beyond stimulus evaluation and classification. 相似文献
43.
Choice reaction time is strongly determined by the sequence of preceding stimuli. With long response-stimulus intervals (RSIs), a cost-benefit pattern is observed, which has been related to expectancy, whereas with short RSIs a benefit-only pattern emerges, possibly because of automatic facilitation. In the present study, event-related potentials were recorded while subjects performed serial choice responses to visual and auditory stimuli at long and short RSIs. As expected, reaction times displayed cost-benefit and benefit-only patterns at long and short RSIs, respectively. In contrast, sequential effects in event-related potential amplitudes displayed a cost-benefit pattern, unaffected by the RSI. The results demonstrate that an expectancy-like mechanism is always active in serial tasks but appears to influence performance only when the RSI is long. 相似文献
44.
45.
Repetition priming of object identification refers to the phenomenon whereby experience with an object induces systematic changes in subsequent processing of that same object. This data-driven form of priming is distinct from conceptually-driven priming. To date, considerable controversy exists about whether data-driven priming reflects facilitation in perceptual processing or mediation by preexisting object representations. The present study concerned priming of recognizing familiar and unfamiliar faces and how this priming is influenced by face inversion, which interferes with perceptual face processing. Perceptual and representation-based loci conjointly contributed to priming; the perceptual locus was operative similarly for familiar and unfamiliar faces, whereas the representation-based locus was only invoked for familiar faces and resulted in a response-time reduction triple the magnitude of that from the perceptual locus. The results constrain theoretical accounts of data-driven priming by indicating that improved identification can result from the combination of perceptual and representation-based facilitation. 相似文献
46.
Robert Sommer 《International journal of psychology》1968,3(2):109-114
Estimation de l'intimité psycbologuque dans cinq pays. — On fait passer à des étudiants américains, anglais, hollandais, suédois et pakistanais, un questionnaire qui a été conçu pour mesurer l'impression d'intimité que donnent diverses dispositions spatiales. On retrouve la même ordination dans tous les échantillons : être assis côte-à-côte donne la plus forte impression d'intimité; viennent ensuite, dans l'ordre, voisiner de chaque côté d'un coin, être face-à-face, être à distance ou en diagonale. Les estimations faites par les Américains, les Suédois et les Anglais sont très semblables; mais les Hollandais jugent la position en coin moins intime que ne le font les autres sujets; de même, les Pakistanais, pour le face-à-face. l'A. suggère une utilisation éventuelle des dispositions spatiales comme methode non-verbale de mesure de Pintimité psychologique dans une culture. 相似文献
47.
Decision-making policies are subject to modulation by changing motivational states. However, so far, little is known about
the neurochemical mechanisms that bridge motivational states with decision making. Here we examined whether dopamine (DA)
in the nucleus accumbens core (AcbC) modulates the effects of motivational states on effort-based decision making. Using a
cost–benefit T-maze task in rats, we examined the effects of AcbC DA depletions on effort-based decision making, in particular
on the sensitivity of effort-based decision making to a shift from a hungry to a sated state. The results demonstrated that,
relative to sham controls, rats with AcbC DA depletion in a hungry as well as in a sated state had a reduced preference for
effortful but large-reward action. This finding provides further support for the notion that AcbC DA regulates how much effort
to invest for rewards. Importantly, our results further revealed that effort-based decision making in lesioned rats, as in
sham controls, was still sensitive to a shift from a hungry to a sated state; that is, their preferences for effortful large-reward
actions became lower after a shift from a restricted to a free-feeding regimen. These finding indicate that AcbC DA is not
necessarily involved in mediating the effects of a shift in motivational state on decision-making policies. 相似文献
48.
The development of theories and computational models of reading requires an understanding of processing constraints, in particular
of timelines related to word recognition and oculomotor control. Timelines of word recognition are usually determined with
event-related potentials (ERPs) recorded under conditions of serial visual presentation (SVP) of words; timelines of oculomotor
control are derived from parameters of eye movements (EMs) during natural reading. We describe two strategies to integrate
these approaches. One is to collect ERPs and EMs in separate SVP and natural reading experiments for the same experimental
material (but different subjects). The other strategy is to co-register EMs and ERPs during natural reading from the same
subjects. Both strategies yield data that allow us to determine how lexical properties influence ERPs (e.g., the N400 component)
and EMs (e.g., fixation durations) across neighboring words. We review our recent research on the effects of frequency and
predictability of words on both EM and ERP measures with reference to current models of eye-movement control during reading.
Results are in support of the proposition that lexical access is distributed across several fixations and across brain-electric
potentials measured on neighboring words. 相似文献
49.
Werner Sommer Andrea Hildebrandt Olga Kunina-Habenicht Annekathrin Schacht Oliver Wilhelm 《Acta psychologica》2013,142(1):62-73
Although there is abundant evidence for female superiority in Face Cognition (FC), a number of questions regarding sex differences remain to be addressed. Here we report a reanalysis of data on the level of latent factors, modeled on the basis of an extensive test battery applied to three samples of over 800 adults in all. In independent samples the measurement structure of FC was invariant for both sexes, indicating that the measurement of the construct does not depend on the context variable sex, and investigating mean performance differences will not be biased by measurement issues — a neglected aspect in previous studies. We confirmed female superiority for face perception (FP) and face memory (FM). For the first time we could show that these sex differences prevailed after accounting for sex differences in broadly measured general cognitive functioning and in object perception. Across adult age, sex differences in FM increased due to the rapid decline of this ability in men, whereas performance in women remained stable across adult age. Self-reported social involvement and things-oriented activities moderated sex-differences in FM. Results show that sex differences are salient at the level of specific FC constructs and that they can be partially explained by social involvement. 相似文献
50.
In complex three-dimensional mental rotation tasks males have been reported to score up to one standard deviation higher than females. However, this effect size estimate could be compromised by the presence of gender bias at the item level, which calls the validity of purely quantitative performance comparisons into question. We hypothesized that the effect of gender bias at the level of distinct item design features could lead to either an over- or underestimation of reported effect sizes of the gender difference in three-dimensional mental rotation. Using automatic item generation we conducted a series of psychometric experiments in which we independently manipulated one out of four different item design features that have exhibited a gender bias in the previous studies (study 1). This was done in a between-subjects design. The results indicated that gender bias caused by item design features linked to the perceptual stadium of mental rotation led to an overestimation of the effect size of the gender difference while item design features associated with the encoding and transformational stadium resulted in an underestimation of the effect size of the gender difference. In study 2 we tested the hypothesis that the gender difference still remains while controlling for the item design features causing gender bias. The results suggest that a significant portion of the gender difference may be attributable to perceptual and encoding processes involved in mental rotation. 相似文献