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131.
Cued-recall in episodic memory was investigated in relation to low and high cognitive support at retrieval, executive function level and fluid intelligence level in 81 healthy adults divided first into two age groups (young and elderly adults). The first analyses showed that age-related differences were greater when a low cognitive support was provided to recall the words. An individual index of loss of performance when the number of cues was decreased was then calculated. Hierarchical regression analysis revealed that the executive functions measure (perseverative errors on the Wisconsin Card Sorting Test) was a better candidate than the fluid intelligence measure (Cattell's culture fair test) to account for the age-related variance of the size of performance loss. These findings suggest that age differences in implementing strategic retrieval may be mainly due to a decline in executive functions. 相似文献
132.
BACKGROUND: Recent models of emotional disorders and psychosis implicate metacognitive beliefs in the development and maintenance of psychological distress. We predicted that patients with established psychotic disorders and those meeting at risk mental state (ARMS) criteria (and, thus, at increased risk of developing psychosis) would show higher levels of metacognitive beliefs than non-patient controls. Furthermore, we predicted that patients with psychosis would show higher levels of such beliefs than the at risk group. METHOD: The Metacognitions Questionnaire was administered to 73 patients with psychotic disorders, 43 ARMS patients and 188 non-patients. RESULTS: As predicted, patients with psychotic diagnoses and those at risk scored higher on metacognitive belief dimensions than non-patients. Patients with psychosis showed higher positive metacognitive beliefs than the at risk patients, indicating a greater range of unhelpful metacognitions overall, when compared to non-patients. CONCLUSIONS: These findings are consistent with metacognitive conceptualisations of psychological disorders. The implications of these findings for clinical practice are discussed. 相似文献
133.
Age differences in resistance to peer influence 总被引:3,自引:0,他引:3
Prior research describes the development of susceptibility to peer pressure in adolescence as following an inverted U-shaped curve, increasing during early adolescence, peaking around age 14, and declining thereafter. This pattern, however, is derived mainly from studies that specifically examined peer pressure to engage in antisocial behavior. In the present study, age differences and developmental change in resistance to peer influence were assessed using a new self-report instrument that separates susceptibility to peer pressure from willingness to engage in antisocial activity. Data from four ethnically and socioeconomically diverse samples comprising more than 3,600 males and females between the ages of 10 and 30 were pooled from one longitudinal and two cross-sectional studies. Results show that across all demographic groups, resistance to peer influences increases linearly between ages 14 and 18. In contrast, there is little evidence for growth in this capacity between ages 10 and 14 or between 18 and 30. Middle adolescence is an especially significant period for the development of the capacity to stand up for what one believes and resist the pressures of one's peers to do otherwise. 相似文献
134.
TOT states may be viewed as a temporary and reversible microamnesia. We investigated the effects of lorazepam on TOT states in response to general knowledge questions. The lorazepam participants produced more commission errors and more TOTs following commission errors than the placebo participants (although the rates did not change). The resolution of the TOTs was unimpaired by the drug. Neither feeling-of-knowing accuracy nor recognition were affected by lorazepam. The higher level of incorrect recalls produced by lorazepam participants may be due to the fact that they were more frequently temporarily unable to access a known item. For some of these items, the awareness of the retrieval failure resulted in a commission TOT (phenonemological TOT after a commission error). The resolution of the TOT conflict is discussed in the light of the anxiolytic and anticonflict effects of lorazepam. The data are discussed in terms of contemporary theories of TOTs and the effects that benzodiazepines have on semantic memory. 相似文献
135.
Memory shows age-related decline. According to the current prevailing theoretical model, encoding of memories relies on modifications in the strength of the synapses connecting the different cells within a neuronal network. The selective increases in synaptic weight are thought to be biologically implemented by long-term potentiation (LTP). Here, we report that tetanic stimulation of afferent fibers in slices from 12-mo-old mice triggers an LTP not restricted to the activated synapses. This phenomenon, which can be anticipated to hinder memory encoding, is suppressed by blocking either L-type Ca(++) channels or Ca(++)-induced Ca(++) release, both well known to become disregulated with aging. 相似文献
136.
Helinä Häkkänen Karl Ask Mark Kebbell Laurence Alison Pär Anders Granhag 《Applied cognitive psychology》2009,23(4):468-481
This study examined the effects of case‐specific facts and individual discomfort with ambiguity (DA) on investigators' beliefs concerning effective interviewing tactics for suspects. Violent crime investigators (n = 30) responded to a questionnaire including the Need for Closure Scale (NFCS) and ratings of the importance of 39 interrogation tactics in two hypothetical interrogations with a homicide suspect, where the evidence consisted of either technical evidence or soft information. Twenty tactics were analysed with a multidimensional scaling procedure which confirmed two discrete interviewing themes: humane and dominant. More tactics, both dominant and humane, were rated as important if the evidence was soft compared with technical. In the soft evidence condition, investigators who were high on DA rated both types of tactics as more important than did low‐DA investigators. In the technical evidence condition, no such difference emerged. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
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We analyze four general signal detection models for recognition memory that differ in their distributional assumptions. Our
analyses show that a basic assumption of signal detection theory, the likelihood ratio decision axis, implies three regularities
in recognition memory: (1) the mirror effect, (2) the variance effect, and (3) the z-ROC length effect. For each model, we
present the equations that produce the three regularities and show, in computed examples, how they do so. We then show that
the regularities appear in data from a range of recognition studies. The analyses and data in our study support the following
generalization: Individuals make efficient recognition decisions on the basis of likelihood ratios. 相似文献