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81.
Hubbard TL 《Psychonomic bulletin & review》2005,12(5):822-851
Memory for the final location of a moving target is often displaced in the direction of target motion, and this has been referred
to asrepresentational momentum. Characteristics of the target (e.g., velocity, size, direction, and identity), display (e.g., target format, retention interval,
and response method), context (landmarks, expectations, and attribution of motion source), and observer (e.g., allocation
of attention, eye movements, and psychopathology) that influence the direction and magnitude of displacement are reviewed.
Specific conclusions regarding numerous variables that influence displacement (e.g., presence of landmarks or surrounding
context), as well as broad-based conclusions regarding displacement in general (e.g., displacement does not reflect objective
physical principles, may reflect aspects of naive physics, does not solely reflect eye movements, may involve some modular
processing, and reflects high-level processes) are drawn. A possible computational theory of displacement is suggested in
which displacement (1) helps bridge the gap between perception and action and (2) plays a critical part in localizing stimuli
in the environment. 相似文献
82.
Irene?M.?Thio Timothy?R.?ElliottEmail author 《Journal of clinical psychology in medical settings》2005,12(4):293-299
We examined the potentially mediating effects of negative affectivity (NA) on the hope–depression relationship among a sample
of postpartum women. We also assessed the social support reported by these women and examined the possible mediating effects
of NA on the social support–postpartum depression relationship. Correlational analyses of data obtained from women (N = 98) who had given birth in the previous 6 months revealed that NA did not mediate either hope or social support in the
prediction of postpartum depression. Hope accounted for a significant degree of variance in postpartum depression. These data
suggest that hope has palliative effects among women following childbirth and these effects are not nullified or explained
by emotional predispositions. 相似文献
83.
Murphy TF 《The American journal of bioethics : AJOB》2005,5(6):51-2; discussion W14-6
84.
Two diary studies investigated the prevalence of memory conjunction errors for real-life events. In both studies, participants completed detailed diary pages over the course of several weeks. Participants in both diary studies committed memory conjunction errors on a later recognition memory test. In the second diary study participants also made remember/know judgements. For a large proportion of their memory conjunction errors participants indicated that they "remembered" the event occurring in that context. These diary studies demonstrate that memory conjunction errors do occur for autobiographical memories, and these errors can seem compelling. 相似文献
85.
86.
This study examined the relationship between organizational justice and stress and whether work-family conflict was a mediator of the relationship. Distributive, procedural, interpersonal, and informational injustice were cast as stressors to explore their relationships with the stress levels of 174 faculty members employed at 23 U.S. universities. The results revealed that procedural and interpersonal justice had the strongest relationships with stress, and that these effects were mediated by work-family conflict. The presence of justice seemed to allow participants to better manage the interface of their work and family lives, which was associated with lower stress levels. These results were observed even when controlling for job satisfaction and the presence of organizational work-family policies. 相似文献
87.
Challenge point: a framework for conceptualizing the effects of various practice conditions in motor learning 总被引:1,自引:0,他引:1
The authors describe the effects of practice conditions in motor learning (e.g., contextual interference, knowledge of results) within the constraints of 2 experimental variables: skill level and task difficulty. They use a research framework to conceptualize the interaction of those variables on the basis of concepts from information theory and information processing. The fundamental idea is that motor tasks represent different challenges for performers of different abilities. The authors propose that learning is related to the information arising from performance, which should be optimized along functions relating the difficulty of the task to the skill level of the performer. Specific testable hypotheses arising from the framework are also described. 相似文献
88.
A startle stimulus has been shown to elicit a ballistic response in a reaction time (RT) task at very short latencies without involvement of the cerebral cortex (J. Valls-Sole, J. C. Rothwell, F. Gooulard, G. Cossu, & E. Munoz, 1999). The present authors examined the nature of the startle response. A simple RT task was used in which 8 participants performed arm extension movements to 3 target distances (20 degrees, 40 degrees, and 60 degrees ) in a blocked design. An unpredictable startling acoustic stimulus (124 dB) replaced the imperative stimulus in certain trials. The authors verified the presence of a startle response independent from the prepared response by observing electromyographic (EMG) activity in sternocleidomastoid and orbicularis oculi muscles. Findings indicated that when the participant was startled, the intended voluntary response was produced at significantly shorter response latencies. Furthermore, the kinematic variables of the observed response during startle trials for all 3 target distances were mostly unchanged. The EMG characteristics of the responses were not modified, indicating that the response produced was indeed the prepared and intended response. 相似文献
89.
This article investigates the transition to memory-based performance that commonly occurs with practice on tasks that initially require use of a multistep algorithm. In an alphabet arithmetic task, item response times exhibited pronounced step-function decreases after moderate practice that were uniquely predicted by T. C. Rickard's (1997) component power laws model. The results challenge parallel strategy execution models as developed to date and they demonstrate that the shift to retrieval is an item-specific, as opposed to task-general, learning phenomenon. The results also call into question the entire class of smooth speed-up functions as global empirical learning laws. It is shown that overlaying of averaged item fits on averaged data can provide a sensitive test for model sufficiency. Strategy probes agreed with strategy inferences that were based on step-function speed-up patterns, supporting the validity of the probing technique. 相似文献
90.