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171.
Sylvia?LohEmail author Nicole?Lamond Jill?Dorrian Gregory?Roach Drew?Dawson 《Behavior research methods》2004,36(2):339-346
The 10-min psychomotor vigilance task (PVT) has often been used to assess the impact of sleep loss on performance. Due to
time constraints, however, regular testing may not be practical in field studies. The aim of the present study was to examine
the suitability of tests shorter than 10 min. in duration. Changes in performance across a night of sustained wakefulness
were compared during a standard 10-min PVT, the first 5 min of the PVT, and the first 2 min of the PVT. Four performance metrics
were assessed: (1) mean reaction time (RT), (2) fastest 10% of RT, (3) lapse percentage, and (4) slowest 10% of RT. Performance
during the 10-min PVT significantly deteriorated with increasing wakefulness for all metrics. Performance during the first
5 min and the first 2 min of the PVT deteriorated in a manner similar to that observed for the whole 10-min task, with all
metrics except lapse percentage displaying significant impairment across the night. However, the shorter the task sampling
time, the less sensitive the test is to sleepiness. Nevertheless, the 5-min PVT may provide a viable alternative to the 10-min
PVT for some performance metrics. 相似文献
172.
This demonstration uses one of the most famous human faces, the portrait of Mona Lisa, La Gioconda, by Leonardo da Vinci. Usually, we have a very accurate and stable representation of the exact configuration of such a familiar face. Typically, we are able to rapidly recognise even subtle configural changes. However, here we show that an exposure to specific alterations performed on a familiar face substantially reduces this ability even over a time period as long as 80 min. This demonstration illustrates the flexibility of the perceptual system and adaptation to new information. 相似文献
173.
Epstein JN Conners CK Erhardt D Arnold LE Hechtman L Hinshaw SP Hoza B Newcorn JH Swanson JM Vitiello B 《Journal of abnormal child psychology》2000,28(6):585-594
Patterns of familial aggregation of ADHD symptoms in parents of ADHD and non-ADHD children were examined. Within the ADHD sample, symptom aggregation was examined as a function of biological relationship, parent and child gender, and children's comorbid diagnoses. Participants consisted of parents of 579 children with ADHD, Combined Type participating in the multimodal treatment study of children with ADHD and parents of 288 normal control participants. Adult symptoms of ADHD were measured by both self-report and report of a significant other. Results indicated that the parents of children with ADHD had higher ratings of inattention/cognitive problems, hyperactivity/restlessness, impulsivity/emotional lability, and lower self-concept than parents of children without ADHD on both self-report and other-report ratings. Within the ADHD sample of children, other-report ratings of inattention/cognitive problems and impulsivity/emotional lability were higher for biological parents compared to nonbiological parents whereas self-ratings were not related to biological status. These findings support previous research documenting familial aggregation of ADHD and appear to strengthen the hypothesis that there is a genetic contribution to ADHD. 相似文献
174.
175.
Toward an Integrative Model of Affect Regulation: Applications to Social-Psychological Research 总被引:1,自引:0,他引:1
Drew Westen 《Journal of personality》1994,62(4):641-667
ABSTRACT This article describes a model of affect regulation that integrates research and theory from psychoanalytic, cognitive, behavioral, and evolutionary perspectives on personality. It proposes that feelings are mechanisms for the selection and retention of behavioral and mental responses. Individuals select behaviors, coping strategies, and defensive strategies that regulate aversive affective states and maximize pleasurable ones. These affect regulation procedures are encoded as procedural knowledge and are activated under specific circumstances. Some regulation strategies are affect-specific, whereas others can be used to regulate multiple affects of similar valence. These procedures are often activated to resolve discrepancies between perceived and desired states of the self, significant others, and external circumstances. The utility of the model is demonstrated through a reinterpretation and integration of a number of disparate traditions in social psychology, including many of the classic experiments on social influence, in which the processing of emotionally relevant social information plays a substantial part. 相似文献
176.
David C. Geary Drew H. BaileyAndrew Littlefield Phillip WoodMary K. Hoard Lara Nugent 《Cognitive development》2009,24(4):411-429
Kindergarten to third grade mathematics achievement scores from a prospective study of mathematical development (n = 306) were subjected to latent growth trajectory analyses. The four corresponding classes included children with mathematical learning disability (MLD, 6% of sample), and low (LA, 50%), typically (TA, 39%) and high (HA, 5%) achieving children. The groups were administered a battery of intelligence (IQ), working memory, and mathematical-cognition measures in first grade. The children with MLD had general deficits in working memory and IQ and potentially more specific deficits on measures of number sense. The LA children did not have working memory or IQ deficits but showed moderate deficits on these number sense measures and for addition fact retrieval. The distinguishing features of the HA children were a strong visuospatial working memory, a strong number sense, and frequent use of memory-based processes to solve addition problems. Implications for the early identification of children at risk for poor mathematics achievement are considered. 相似文献
177.
Trafton Drew Andrew W. McCollough Todd S. Horowitz Edward K. Vogel 《Psychonomic bulletin & review》2009,16(2):411-417
What is the role of attention in multiple-object tracking? Does attention enhance target representations, suppress distractor representations, or both? It is difficult to ask this question in a purely behavioral paradigm without altering the very attentional allocation one is trying to measure. In the present study, we used event-related potentials to examine the early visual evoked responses to task-irrelevant probes without requiring an additional detection task. Subjects tracked two targets among four moving distractors and four stationary distractors. Brief probes were flashed on targets, moving distractors, stationary distractors, or empty space. We obtained a significant enhancement of the visually evoked P1 and N1 components (~100–150 msec) for probes on targets, relative to distractors. Furthermore, good trackers showed larger differences between target and distractor probes than did poor trackers. These results provide evidence of early attentional enhancement of tracked target items and also provide a novel approach to measuring attentional allocation during tracking. 相似文献
178.
179.
Gernot Gerger Michael Forster Helmut Leder 《Quarterly journal of experimental psychology (2006)》2017,70(4):637-648
Whether you like a person or not is often appraised in a glance. However, under such short presentation durations stimuli are harder to perceive and, according to hedonic fluency theory-which holds that higher fluency is linked to higher liking-thus, are liked less. Given that liking considerably influences person perception, we tested how shorter and longer presentation durations affect liking for faces and compared this with abstract patterns. To capture facets of fluency of processing we assessed felt fluency, liking, and certainty ratings. Following predictions of fluency theory, longer presentation durations led to higher felt fluency, certainty, and positively affected liking judgments in the abstract patterns. In faces, felt fluency and certainty also increased with longer durations. However, with longer durations, faces were liked less, and liking was not related to felt fluency. In other words, in contrast to hedonic fluency theory, faces are more attractive when only seen for a short amount of time. Thus, fluency does not inevitably lead to more positive evaluations—it rather depends on the stimulus category. We discuss these findings in terms of the special status that faces have with regard to human perception and evaluation. 相似文献
180.
This paper describes the initial development of a treatment for bulimia nervosa using a functional contextual treatment approach. Seven women (6 with a diagnosis of bulimia nervosa and 1 with a diagnosis of eating disorder not otherwise specified) completed 12 sessions of functional contextual treatment. Participants were assessed with the Eating Disorders Examination at baseline and following treatment. The intervention produced significant reductions in binge eating, purgative behavior, dietary restraint, and eating concerns. A functional contextual treatment holds promise for the treatment of bulimia nervosa. However, the treatment needs to be refined further and will need to be tested in controlled clinical trials with long-term follow-up. 相似文献