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191.
Athletes are often described as thriving in sport; however, extant research on this construct in sport has been divergent. This study aimed to provide the first dedicated exploration of thriving in elite sport performers by considering its characteristics, outcomes, and facilitators. Semistructured interviews (n = 15) were conducted with athletes, coaches, and sport psychology practitioners and were analyzed using applied thematic analysis. Thriving was perceived to comprise a sustained high-level of performance and dimensions of well-being. Furthermore, predominantly positive outcomes of thriving were described, and participants identified a network of personal and contextual enablers that could facilitate thriving. 相似文献
192.
The ability to compute probability, previously shown in nonverbal infants, apes, and monkeys, was examined in three experiments with pigeons. After responding to individually presented keys in an operant chamber that delivered reinforcement with varying probabilities, pigeons chose between these keys on probe trials. Pigeons strongly preferred a 75% reinforced key over a 25% reinforced key, even when the total number of reinforcers obtained on each key was equated. When both keys delivered 50% reinforcement, pigeons showed indifference between them, even though three times more reinforcers were obtained on one key than on the other. It is suggested that computation of probability may be common to many classes of animals and may be driven by the need to forage successfully for nutritional food items, mates, and areas with a low density of predators. 相似文献
193.
Yelena P. Wu James P. Selig Michael C. Roberts Ric G. Steele 《Journal of child and family studies》2011,20(4):414-423
The vast majority of new mothers experience at least some depressive symptoms. Postpartum maternal depressive symptoms can
greatly influence children’s outcomes (e.g., emotional, cognitive, language, and social development). However, there have
been relatively few longitudinal studies of how maternal depressive symptoms may influence children’s social skills. The current
study (n = 1363) examined the trajectory of maternal depressive symptoms (from 1 month to 36 months) and whether maternal depressive
symptoms at 1 month postpartum and the change in symptoms over time (from 1 month to 3 years) predicted children’s parent-
and teacher-rated social skills when they were 4.5 and 6.0 years old. A growth curve model indicated that, on average, maternal
depressive symptoms declined over time in a nonlinear fashion. Further analyses indicated that after controlling for five
demographic factors (child sex, family income, maternal age, mother’s marital status, and maternal education), initial maternal
depressive symptoms significantly predicted children’s social skills as reported by mothers. The results support the notion
that maternal depressive symptoms during children’s infancy can have long-term associations with children’s social skills.
In addition, the results emphasize the importance of intervention and prevention efforts targeting maternal depressive symptoms
during infancy, beginning immediately postpartum. 相似文献
194.
Akinleye I Roberts JS Royal CD Linnenbringer E Obisesan TO Fasaye GA Green RC 《Journal of genetic counseling》2011,20(6):650-659
Genetic susceptibility testing for common diseases is expanding, but little is known about race group differences in test
perceptions. The purpose of this study was to examine differences between African Americans and Whites in knowledge, attitudes,
and motivations regarding genetic susceptibility testing for Alzheimer’s disease (AD). Before enrolling in an AD genetic testing
research trial, 313 first-degree relatives of AD patients (20% African American; 71% female; mean age = 58 years) were surveyed
regarding: (1) knowledge about genetics and AD risk; (2) concerns about developing AD; and (3) reasons for seeking testing.
In comparison to Whites, African Americans were less knowledgeable about genetics and AD risk (p < .01) and less concerned about developing AD (p < .05), with lower levels of perceived disease risk (p = .04). The results suggest that African Americans and Whites differ notably in their knowledge, beliefs, and attitudes regarding
genetic testing for AD. Additional research with more representative samples is needed to better understand these differences. 相似文献
195.
Cumulative risk and early cognitive development: a comparison of statistical risk models 总被引:1,自引:0,他引:1
Although it is generally accepted that social risk factors predict delays in early cognitive and language development, there is less agreement about how to represent such associations statistically. Using data collected prospectively on 87 African American children during their first 4 years, this study examined 3 analytic methods for describing a child's level of social risk: (a) individual risk variables, (b) factor scores derived from those risk variables, and (c) a risk index computed by tallying the number of risk conditions present. Comparisons indicated that the individual-risk-variables approach provides better overall prediction of developmental outcomes at a particular age but is less useful in predicting developmental patterns. The risk-factor approach provides good prediction of developmental trajectories when sample sizes are moderate to large. Finally, the risk-index approach is useful for relating social risk to developmental patterns when a large number of risk variables are assessed with a small sample or when other constructs are of primary interest. 相似文献
196.
Quantitative theories with free parameters often gain credence when they closely fit data. This is a mistake. A good fit reveals nothing about the flexibility of the theory (how much it cannot fit), the variability of the data (how firmly the data rule out what the theory cannot fit), or the likelihood of other outcomes (perhaps the theory could have fit any plausible result), and a reader needs all 3 pieces of information to decide how much the fit should increase belief in the theory. The use of good fits as evidence is not supported by philosophers of science nor by the history of psychology; there seem to be no examples of a theory supported mainly by good fits that has led to demonstrable progress. A better way to test a theory with free parameters is to determine how the theory constrains possible outcomes (i.e., what it predicts), assess how firmly actual outcomes agree with those constraints, and determine if plausible alternative outcomes would have been inconsistent with the theory, allowing for the variability of the data. 相似文献
197.
Pigeons flexibly time or count on cue 总被引:4,自引:0,他引:4
In Experiment 1, pigeons were presented with a sequence of light flashes and cued to peck a key for reward either after a fixed time or after a fixed number of flashes. Curves that showed the rate of key pecking over time within trials indicated that peak rates of response were reached near the fixed time on timing-cued trials and near the fixed number of flashes on counting-cued trials. In Experiment 2, the key cue was shifted from timing to counting or from counting to timing midway through a trial. The peak times reached after the cue change indicated that pigeons kept track of time while cued to count but did not count while cued to time. These findings suggest a basic asymmetry in the dual-mode model of timing and counting. 相似文献
198.
Naqshbandi M Roberts WA 《Journal of comparative psychology (Washington, D.C. : 1983)》2006,120(4):345-357
The Bischof-Kohler hypothesis holds that nonhuman animals cannot anticipate a future event and take appropriate action when that event involves satisfaction of a need not currently experienced. Tests of the Bischof-Kohler hypothesis were performed with squirrel monkeys (Saimiri sciureus) and rats (Rattus norvegicus). In experimental trials with both species, a nonthirsty animal had its water bottle removed and then chose between a smaller and larger quantity of food. Consumption of the food induced thirst. Choice of the smaller quantity led to the return of the water bottle sooner than choice of the larger quantity. Monkeys reversed their baseline preference for the larger quantity of food when the experimental contingencies were introduced, but rats continued to prefer the larger amount. Although the rat findings support the Bischof-Kohler hypothesis, the monkey findings challenge it. 相似文献
199.
Some clinicians working with families with alcohol or other drug problems continue to use the codependency model to guide their practice despite the limited empirical support for this approach. Research into codependency has been hampered by the lack of psychometrically sound instruments. The Holyoake Codependency Index (HCI; G. E. Dear & C. M. Roberts, 2000) is a 13-item self-report measure of codependent traits that has previously shown adequate to high reliability, initial evidence of construct validity, and an internal structure that is consistent across samples. In the 4 studies reported here, the internal structure of the HCI was confirmed using confirmatory factor analysis, and further evidence of construct validity was found in that the HCI subscales showed meaningful associations with other psychological and demographic variables. 相似文献
200.
Although the Ebbinghaus illusion is commonly used as an example of a simple size-contrast effect, previous studies have emphasised its complexity by identifying many factors that potentially influence the magnitude of the illusion. Here, in a series of three experiments, we attempt to simplify this complexity. In each trial, subjects saw a display comprising, on one side, a target stimulus surrounded by inducers and, on the other, an isolated probe stimulus. Their task was to indicate whether the probe appeared larger or smaller than the target. Probe size was adjusted with a one-up, one-down staircase procedure to find the point of subjective equality between probe and target. From these experiments, we argue that the apparent effects of inducer size are often confounded by the relative completeness of the inducing surround and that factors such as the similarity of the inducers and target are secondary. We suggest a simple model that can explain most of the data in terms of just two primary and independent factors: the relative size of the inducers and target, and the distance between the inducers and the target. The balance between these two factors determines whether the size of the target is underestimated or overestimated. 相似文献